Hi, You will have to excuse me but i'm not sure what you mean by Guillaume maried to Joan Sorensen S/O of Alban and Rosana Savoie. But one thing I do now is Willie Allain which was married to Belzeme Bastarache was also known as Guillaume. Now this is according to my grand father. The Guillaume you just mentioned can't be the same in my line. For the names of spouses of Ablan and Rosana children I waill have something for you this weekend.