Philippa, I got the coat of arms info from this website, called Surname Meanings. The website is www.allthingspersonalized.com/surnamesA_D.htm
That is all the info I could get without paying, for the coat of arms, I am looking to other pages to find a picture or something. The Relle name is hard to find. Let me know what you find out? I am very interested in this side of the family, because it is my Grandma's side that came from France & Germany.