The surnames I'm focusing on at the moment are (mainly the first four):

GRIFFITH
MOORE (both parents' sides, actually)
GRANT
McNEILL
WHITIS/WHITEHURST
HAWKER/HACKER (my German line, they changed to Hacker, but I'm not 100% sure the original was Hawker... the wife's maiden name is Vierk/Vierek or something like that)
HOLDERFIELD/HOLYFIELD (various spellings of the latter)