People Margaret Kincaid Margaret Kincaid Margaret Kincaid from . About Family Husband John Douglas, 5th Of Mains Children She has two children, Alexander and Unknown . Other facts about Margaret Kincaid Given name Margaret Sex or gender Female Margaret Kincaid's Children (2) Alexander Douglas, 6th Of Mains Unknown Daughter Douglas 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