Re: Giles Slocum Mystery
Well, I'll put in my own two cents worth on the wife of Giles1 Slocum. I think the idea that her surname was Cooke comes from John Osborne Austin's "Genealogical Dictionary of Rhode Island," which abstracts the will of Thomas1 Cooke of Netherbury, England and Portsmouth. The will, according to Austin's reading, refers to his property "bounded by my brother Giles Slocum." Austin assumed that he meant brother-in-law, which is not a bad interpretation if the brother part was right, and therefore concluded that Joan was the sister of Thomas Cooke.
Jane Fletcher Fiske, who is the editor of NEHGR and the foremost living genealogist of early Rhode Island families, reprinted the actual will in her two-volume genealogy of the descendants of Thomas Cooke. The will actually says "brocke" of "Gyles" Slocum, not "brother," and almost certainly the word used means "brook," not "brother," which interpretation has the additional virtue of fitting into the context of the passage from the will, which is describing metes and bounds of his real estate, not kinship [it also fits in with the topography of the property he was desribing].
So in a nutshell I think that a "Cooke" ancestry for Joan has some problems, absent some other evidence.
I think the "Joan" and "Johanna" or "Joanna" may well be one and the same, the spelling of the early Portsmouth town clerks was atrocious.
The Bailey theory is interesting, I haven't seen that before. Idoubt that Giles had much connection with Taunton, he is too continuously documented in Portsmouth. But if his wife was a Bailey, I would look for a connection to William1 Bailey (d.1676) of Newport. He lived in that section of Newport that is now Middletown, not all that far away from Giles Slocum. His descendants were quite numerous in Little Compton, and there was another branch that settled west of Narragansett Bay; there are a lot of Bailey marriages into other Aquidneck Island families in the late 1600s.