People Sir Gilbert Cornewall Sir Gilbert Cornewall Sir Gilbert Cornewall from . About Family Child He has one child, Mary . Other facts about Sir Gilbert Cornewall Family name Cornewall. Show people with the surname Cornewall Honorific prefix Sir Sir Gilbert Cornewall's Child Mary Cornewall 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