Aside: By the way, we're going to document this more thoroughly on Wikipedia - Great House (Cape Ann). We have John Goff's expertise available to assist us. This house was the first of its kind in New England.
This would mean, given the association mentioned by John Goff (in his article), that the Elizabeth who married Lot was a grand-niece of Thomas. However, according to a UK page, dealing with the Dorchester Company, the sister, Elizabeth, of Rev. John White who married Thomas Gardner did not have a son named Thomas.
Aside: From an outsider's view, Rev. John White didn't act like much of an uncle, or did he? If he were, he sure sold his nephew done the river, IMHO.
As you can see by the links, we are, mostly, in an acquisition'l mode. The intent is to find out all of the sides and their supporting material. The hope would be to find some reasonable story that has good support. Now, when it is a case that is not so strong, we can make proper conjectures. To wit? About the number of wives of Thomas: we say two.
The beauty of newer methods (disparate view bridging in the cloud) will be to allow multi-faceted looks at something. We don't live in a black/white world. Yet, even fuzzy approaches can (must) de-fuzzify now and then. How to present the material with the proper richness will be a continuing challenge.
Aside: There are many such questions to work on.
01/25/2013 -- John Goff is noted for his Salem preservation efforts.