The name of the locality is attested in the formsPlebs Seminiaca in 869,[3]Sivingac in 1212,Sevinar in 1218,Syvignac in 1239,Sevignac in 1256, 1262, and in 1266,Sivingnac in 1269,Sevignac in 1271,Seguignac in 1278,Sevignac in 1289, SaintVingac in 1303, andSevignac around 1330 and in 1340.[4]
Sévignac comes from theLatin nameSabinius (a name of a veteran of theRoman legion who was awarded for his bravery around the time ofChrist), and theGaulish suffixacos.
However, it should not be overlooked that in the name Sévignac(Seminiacum) one finds the formsem(i)nio which means "throat".
The origin of Sévignac dates back to the Gallo-Roman era.
One estate was awarded to Sabinius, a veteran of the Roman legion, at the 1st time of the Christian era, as a reward for his bravery. Such allocations were made at a time when, as a result of a demographic decline, a shortage of labor left a number of undeveloped lands.
Sévignac is mentioned under the name ofPlebs Seminiaca in a charter from the abbey ofRedon dating from November 29, 869 which mentions thatKingantdreh, daughter ofLouvenan, gives by inheritance the parish of Sévignac toSalomon, King of Brittany, her adoptive son.
Thechâteaux ofLimoëlan, of the eleventh century and the eighteenth century, are built on the site of the former lordship owned by the family ofRousselot.
On the eve of theFrench Revolution, more than ten priests provided religious guidance within Sévignac. Under theFirst French Empire, Sévignac was populated by around 3,000 villagers, most of which were farmers. The town experienced strong depopulation at the end of the nineteenth century into the twentieth century.