Hard for anyone to help with so little information.
Do you know what COUNTRY this person lived in? Put in any location - Country > Region/Province/State > City/town that you are aware of. Can't tell if you are looking for someone in New Zealand or Ireland!
Is 'Doc' his first name, a nick name or his profession?
Include the names of his parents/spouses/children and any birth/marriage/death dates if you have any, which might help in a search.