Hi again, www.familysearch.org is available again, and I'm seeing a marriage of a Thomas GILSON marrying in London, England, in 1633. Another reference has a Thomas being born in England in 1614. Another reference has a Thomas marrying in MA in ~1639 to a Kathern (unk). And a reference to him dying in Chelmsford, with no date mentioned. I only have the "history of Chelmsford" in CD format, and I'll try to look at it later in the day. Perhaps if someone else has the book they could look to see what it says. (oops. I just remembered the book is on-line, and I'll go find it.) I just checked the "history of Billerica," and the name is only mentioned twice. As it turns out, the name is mentioned as part of the CROSBY family I'm descended from. It was 2 years ago when I did a lot of looking for the correct parents of Simeon CROSBY who married in 1797. My "educated guess" is that they were Jessaniah CROSBY and Mary HOSLEY whose last child was only listed as "a son." The book says that their son, Jessaniah, married Elizabeth GILSON of Pepperell, and they were pioneers in the settlement of Hebron, NH. There is another reference to a John KEMP marrying a Susannah GILSON in 1735. I saw that Janice has posted a lot of information on GILSON in the past, but in regards to Groton, MA, etc. I just checked www.familysearch.org and only found a William GILSON in early 1600's in Scituate, MA, and in Windsor, CT. Betty (near Lowell, MA)