People Joan De La Mare Joan De La Mare Joan De La Mare from . About Family Husbands Joan De La Mare had three marriages. Ralph De Cromwell Henry De Grey, 1st Baron Grey Of Codnor Simon De Brockbury Children She has two children, Margaret and Ralph . Other facts about Joan De La Mare Given name Joan Spouses Ralph De Cromwell Henry De Grey, 1st Baron Grey Of Codnor, 52 Simon De Brockbury Joan De La Mare's Children (2) Margaret De Brockbury Ralph De Cromwell 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