Fulk

Fulk is an old European personal name, probably deriving from the Germanic folk ("people" or "chieftain"). It is cognate with the French Foulques, the Italian Fulco and the Swedish Folke, along with other variants such as Fulke, Foulkes, Fulko, Folco, Folquet, and so on.

However, the above variants are often confused with names derived from the Latin ("falcon"), such as Fawkes, Falko, Falkes, and Faulques.

...
Wikipedia