- The Neolithic and Gallic:
- The site where the parish was to rise to Cavan has long worn many traces of a very ancient past. "The inventory of megalithic monuments" published in 1880 reported a menhir planted a few meters from the Chapel of St. memory, the village of Kerikoul a second menhir in the village of Plas-Kerwern, measuring 7 meters high (destroyed in 1846) and three mounds located Plas-Kerwern, at a short distance from each other. The first, Contel-Boudenou was excavated in 1880, especially by Father Prigent, vicar of Bégard. He revealed traces of ash and a few flint flakes, thin clues that allowed to conclude, however, that this vast mound of earth round (Ø 50 m, height 15 m) was buried by incineration, the iron age, high the honor of a chief by a numerous tribe, but poor.
- The second mound at a place called Castel Coagno was explored by Mr. Thubé, prosecutor in Guingamp, the same year as the previous one. The excavation of the monument (smaller than Contel-Boudenou) brought to light a curious stone wall dry quadrilateral, and some fragments of pottery.
- A third mound, the Prat-Castel, has never been excavated. Oblong, 13 to 14 m high, this mound was perhaps a motte as the name of locality suggests.
- This same inventory of 1880 as reported on the common Cavan, but the place, two dolmens (one destroyed) and three other mounds. The dolmen rescued disappeared. As the mound, it was probably one of them, the "Tossen Modeno" Kerviged located near the old chapel of St. Lawrence, the abbot Prigent searched in 1880 to identify some pieces of iron and pottery, and others, who still stood in 1884 near the chapel of St. Trémeur.
- Two pregnant Gallic (?) Were reported in 1890 in the town: one ar Traou This Hoad, and the other Kerampuilh.
- It appears that the common Cavan was the site of an archaeological site of great importance and a rare density, reflecting the vitality of the ancient place. Alas, thoughtlessly destroyed, the remains of civilizations still unclear, for the most part entirely disappeared from the surface.
- An aerial view is still clearly the mound Plas-Kerwern. Many indices can, moreover, suggests that the basement Cavan has not yet released all its archaeological remains. In report any anomalies to know any discovery of various objects or remains (foundations and walls for example) could sometimes put in the way of interesting discoveries.
- The Gallo-Roman
- Very close to the village of Cavan passed the old road from Carhaix to Tréguier whose course still recognizable near Bardérou is that even borrows the road from La Roche-Derrien in Louargat. It is still sometimes known locally as the "Pave-ar-Wrac'h" or that of "Hent-Braz-Coz" (old highway).
- Some remnants (especially several bronze axes discovered in 1851) found near Bardero, allow them to suspect the presence of a Roman camp (?). In 1859 were discovered in the village of Kergozh a piece of Magnentius and several bronze spears.
- The Middle Ages:
- This era saw the birth of probably Cavan as training parish. The rector of Cavan, Dom Alain Le Gros, is quoted in the canonization of Charles of Blois in 1364. The Pouillé Tours Parish already recorded Cavan around 1330. A charter of 1283 mentions the presence in the diocese Tréguier a parish whose name Kagan seems to be the one Cavan.
- The foundation charter of the abbey of Saint-Georges de Rennes allows us to go back at least to 1031 the ancient parish of Cavan. We learn that Cavan ("vicum that vocatur Cavana, Cavan a plebe in" a place called Cavan, in the parish of Cavan) belonged to a certain Viscountess Royanteline who had founded a small community of girls (the eleventh century) . This community disbanded shortly after its inception, however, had had the time to build a chapel dedicated to Mary, Mother of God. It is likely that this community begat a subsequent agglomeration tréviale, Caouënnec-dependent Cavan until the revolution. These are the oldest traces left in Cavan has written history.
- The discovery of the precise origin of the name only Cavan could probably enable us to go still time. But here reign only conjecture. Several assumptions are involved. The most common is that Cavan, delivered in breton "càouan" comes from the common name breton "kaouan" which means owl, screech owl, and it evokes the marshes with thick foliage, birds of night shelters, where Cavan be built. But this version is not satisfactory for many reasons too long to develop here. A second hypothesis is the name of Cavan back to the Saint-Haran, or Garan, an Irish monk, Saint-Efflam companion, landed in Brittany to the sixth century. It is primarily based on two facts: a) St. Garan is the patron of the parish of Cavan even before Saint-Cheron, by which an attempt was made in the eighteenth century to replace the old Celtic saint. b) St. Garan had a chapel in Plouguerneau. In the acts relating thereto, it unfolds, sometimes coexisting forms Garan, Cauã, Cava, Cavan. Cavan would have been built around the hermitage of Saint homne or a place of worship erected in his honor. Forget other versions that have little likelihood.
- The Viscountess Royanteline which depended the eleventh century parish Cavan, died without an heir. All areas were given to the Duke of Brittany in 1032 had to, at least if one believes G. Burgundy. Cavan fell later in the house of Penthièvre, then in the dAvaugour. A cadet branch of this latter house received in appanage earth Cavan she took the name. In the second half of the thirteenth century, the holder of the lordship of Cavan and Caouënnec was a Aymeri still living in 1280. From his marriage with the lady Montmartin he had two son. The eldest, John, principal heir, joined the party of the Counts of Penthievre armed revolt against the Duke of Brittany, Jean 1. Victorious, it confiscated in retaliation, the lordship of Cavan to assign, reward for his loyal service to John, lord of Kersaliou. The lordship was held at Cavan ducal domain.
- Lords of Cavan were "three owls gold sand."
- If we are to believe tradition, a place called "English Cemetery" was the scene of bloody battles during the Hundred Years War. The fact that it is not proven, is certainly plausible. Trégor was indeed shaken by the war being fought in the 14th century, for the possession of the duchy, the house of Montfort allied with the British and French allied to Blois, and opportunities did not fail to slay the English when he occupied the towns of La Roche-Derrien, Tréguier (1335) and Lannion (1346), before being ousted by the uprising in the country of Treg in 1347.
- In the civil and military Cavan Caouënnec and depended on the lordship of Guingamp. The parish and its truce were broken up into several jurisdictions, the most important were those of Abbey Bégard, Coatnizan (in Pluzunet), and Wood-Riou (in Cavan).
- League:
- Disorders of the league, which saw him face the royal troops and those of the Duke of Mercoeur, ravaged the country Cavan. The proximity of three strongholds of high military value, the castle Coatnizan, and Coatfrec than that of Tonquédec, there is something.
- At the end of the 16th century, the fields were crossed by bands of Fontenelle or sire of Kergomar. Looting and rançonnages were the lot of the country for many years. René Fleuriot Langoat gentleman, accompanied by a certain Botilleau, made several prisoners and peasants rançonnèrent Cavan and until President himself, who however managed to escape, at the cost of his parish income which the soldiers enjoyed impunity for them to three years.
- The Revolution
- The Revolution brought in the parish its attendant violence and drama. On 10 September 1792, dozens of people were involved in Cavan scuffle which saw the National Guard shoot Lannion 3-4000 insurgents surrounding parishes.
- The reason for this uprising seems to have had no reason other than overheating minds. No charges could be brought against three defendants cavannais.
- Father André Le Gall, vicar of Cavan at the time of revolutionary events, refused to take the oath to the civil constitution of the clergy and had to emigrate. Arrested Tréguier a lady Taupin, February 11, 1794, he was guillotined together with a colleague stopped him on the place of Marc'hallac'h in Lannion.
- On 16 November 1799, a band of Chouans (?) Attacked the priest in his rectory constitutional Jannic, stripped him of his money and many valuables. Cavannaise population was deemed collectively responsible for the attack because he would not help his pastor and convicted and full refund.
- The first municipality was elected in early 1790.
- The modern period:
- Cavan Elected Mayor in 1801, Pierre Le Floch was continuously through to its joint with a beautiful serenity, the Consulate, the Empire, the Restoration, the Hundred Days, Return of the King, the Revolution of 1830, July Monarchy. Death alone prevented him from swearing in the second republic.
- His successors were: William Trémel, Guillaume Le Razavet (elected February 8, 1847); F. Louis Dromaguet (elected 28 November 1867), Yves-Marie Unvoas (elected in October 1894), Louis Le Huërou (elected February 12, 1907) Joseph Clec'h (elected December 13, 1919), Joseph Le Rolland (elected April 12, 1932) Joseph Hellequin (elected on October 1, 1933) Eugene Legaret (elected December 10, 1938), François-Marie Perrot (elected March 20, 1959) Pierre-Yvon Trémel (elected March 27, 1971) Pierre -Yves Nicol (elected on 15 September 2006).
- The famous Cavannais: Among the famous people who have acquired a certain reputation, born Cavan or in connection with this town include the names of:
- Charles-Marie April, Cavan born on 1 January 1897. Dominican monk, priest, preacher on the radio and television. Appointed Provincial of the Dominicans of Paris (1947), he had to resign from that office in 1959 following the conviction of the experience of the worker priests. He became prior of Jerusalem. He died in Paris on 11 September 1978.
- His brother Henry in April, also born in Cavan, December 4, 1888 was prefect of the Côtes-du-Nord. He died in this position in Saint-Brieuc, January 17, 1949.
- Pierre-Yvon Trémel, Cavan born August 9, 1946. He was mayor of Cavan to 24 years, from 1971 to 2006, president and founder of the Community of Communes Trégor Centre, General Counsel of the District of La Roche-Derrien, vice-chairman of the General Council of Côtes d'Armor, MP Côtes Armor from 1988 to 1993, Senator Côtes d'Armor from 1998 to 2006.
- Geographic Presentation:
- Located in the northwestern department of Côtes-d'Armor, in the municipality of the canton of Cavan La Roche-Derrien, and belongs to the district of Lannion.
- Covering an area of 1640 ha, it is elongated north / south with a town center towards the southeast. It is bounded on the north by or Quemperven or by Langoat northeast, east by Berhet, southeast by Prat, by Pluzunet south, west and north by Tonquédec-west Caouënnec-Lanvézéac.
- Climatology:
- The rainfall in winter and autumn (800 mm / year on average). Rainfall is relatively low (less than 10 days in summer and less than 20 in winter).
- Temperatures: the average of the coldest month (February) can reach 5.5 ° C to 7 ° C while that of July exceeds 16 ° C.
- The insolation is between 1700 and 1800 hours. Prevailing winds are from the southwest in winter, in summer west and north-east in April-May.
- Topography: The topographic map shows a variation in altitude of 60 m between the lowest point 53 m north-west of the town, to Kéricoul, and peaks at 113 m south and 113 m Kerverrot North Water Tower Park Crech. The average altitude is between 80 and 90 m, the highest village 96 m.
- Geology: The basement cavannais is characterized by an exceptional homogeneity. Indeed Ia town is located entirely on the granite massif Plouaret.
- Pedology: The homogeneity of the base is found mainly in soils and silty clay of varying thickness. Some plots reveal granite blocks.
- Hydrology: The drainage system of the town of Cavan is marked by the presence on its western flank, the Guindy, left bank tributary of Jaudy. From south to north, as there are tributaries of the right bank Guindy streams Wood-Riou, Merri Ennec, Petit Jean, Poul Roudour, Ru, Pen Ar Lan, Steren. All these rivers represents a length of 22,800 m plus 630 m from Guindy.
