Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
AGGAS
As described in historical dictionaries
Patronymica Britannica (1860)
AGGAS. Probably the son of Agatha, since such forms as Fil' Agath' and FirAgacie are found in the H.R. See Female Christian Names.