Forgan Family History
Forgan Name Meaning
from Forgan (Fife) which is recorded as Forgrund in 1199–1202 Forgund in 1452 and Forgone in about 1560–70 or from Longforgan (Perths) recorded as Forgrund in 1153–65. The place-names derive from Gaelic *gronn ‘bog marsh’ qualified either by the preposition for ‘above beside’ i.e. ‘(place) above or beside a bog’ or by the intensifying prefix for- i.e. ‘big bog’ (perhaps ‘projecting bog’).
Source: The Oxford Dictionary of Family Names in Britain and Ireland, 2016