Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
GULL
As described in historical dictionaries
Patronymica Britannica (1860)
GULL. Is susceptible of various interpretations, as: 1. The bird; 2. A dupe or fool, very common in the old dramatists, ancl still in use; 3. One of the numerous modifications of Guillaume, William; 4. See Guille.
Surname type: Nickname
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English