People Dr. David Duncan Dr. David Duncan Dr. David Duncan from . About Family Child He has one child, Sarah . Other facts about Dr. David Duncan Family name Duncan. Show people with the surname Duncan Sex or gender Male Given name David Dr. David Duncan's Child Sarah Catriona Grantham Duncan Comments There are no comments yet. Enter your name here: Enter your email here: Enter your message here: Your message is required. Markdown cheatsheet. Submit