People John Mark Gilbert John Mark Gilbert John Mark Gilbert from . About Family Children He has two children, G/Capt. and Charles . Other facts about John Mark Gilbert Given name John Sex or gender Male John Mark Gilbert's Children (2) G/Capt. Charles Lennox Gilbert Charles Lennox Gilbert 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