TRILL

TRILL. 1. A rill is a small stream, a rivulet. A man whose habitation stood near one would acquire the name of AtteRill, which would easily shorten into Trill. 2. There must have been a locality so called, as a John deTril occurs in H.R. co. Devon.

Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.