My name is Kevin Trevena. I live in Chisholm, Minnesota, USA. My ancestors are from Cornwall, and Trevena Village (Now called Tintagel). Somewhere on this website, I read that Earl Richard, the son of King John, constructed the Trevena/Tintagel castle in AD1140. I am wondering how this could be. Earl Richard was not born until January 5th, 1209. Someone please email me with an explaination. Thank you.