I have seen the same connection to this parentage in my Ancestry.com profile and I am super intrigued by it, but I cannot find any documents that connect the two men. I have not seen a John mentioned in Sir John Thomas's list of children anywhere other than ancestry.com. ("John b. 25 Feb 1603, Bishopsgate; (of Macclesfield Granted 2nd Earl of Rivers by mother Hereditary Est & Vixcount Colchester); death 10 Oct 1654 Frodsham, Cheshire West. m. Catherina Parker b. 1605 Hornsby Castle, Lancaster; died 1645 Boston."
On geni.com tree also shows Sir John Thomas as potential father, but I am not sure that it isn't just trying to guess based on people's potentially factually incorrect trees. So sites are very confusing and I have basically hit a brick wall on this connection. Does anyone have any documentation or sources to make this England to Connecticut gap?