Historically the town is noted for having participated in the Red Caps' Revolt (la révolte des Bonnets rouges) in 1675.
Toponymy
The meaning of the name Plouguernével is most probably to be found in the Breton words ploe (parish), kêr (town, village), and nevez (new), although an alternative suggestion is that the last two elements may be a reference to Kernev-uhel (High Cornouaille).