She was born in Boston, and her eldest daughter
Elizabeth married Thomas Fleet, the printer


Not according to this, Bill:
http://www.librarysupport.net/mothergoosesociety/who.html

Sounds like there is some debate on this one!

I recently saw a performance of a pantomime called Mother Goose, and I assumed the story to be the origin of the name (i.e. "Mother Goose" was just another fairy tale). It was closely allied (no surprise) with the story of "the goose that laid the golden eggs". However, I reckon the pantomime is a fairly modern creation that just reuses the (very old) name.