dna next to a surname below indicates it has been registered with the DNA linking service
and the researcher is keen to find bearers of the same surname to join a DNA project.

ons next to a user below means the user has registered a one-name study of a surname
with the Guild of One-Names Studies.

Surname Timeframe Place Researcher
LUCAS 1620 to 1656 Horton David L. Smyser
LUCAS Circa 1831 Central Oxford Peter Thompson