John Clark's Ancestry

I keep a tree on Ancestry (dot) com, but previously had never connected John Clark's (1740) father because I always had questions about continuity based on statements in Jotham Clark's journal about John's father and grandfather. Until and unless proven otherwise, I have placed John Clark's father b. ca 1715 and his grandfather, also John, b. [calculated] ca 1690. The Bedford census of 1710 shows a John Clark b. 1695 born to William Clark. Because there is no evidence to the contrary, and there is some circumstantial evidence in support, I have linked our line to William Clark of Bedford, b. 1670. William is the son of William Clark, b. 1645. This line came from Stamford. William Clark b. 1645 is of undetermined parentage. Following a lineage model I use to estimate generations, I assume William's father to have been born ca. 1620. Other progenitors allied with the Clark line came to Massachusetts and Connecticut between 1630 and 1840 within "The Great Migration" of which much study has been done and published. Likely candidates for additional research would be anyone named John or William who would be allied with surnames we are already familiar with. I have traced one group back to 1630 among arrivals to the Watertown Colony. It is probable to find our Clark line in that colony. Robert Charles Anderson published The Great Migration Study Project, pages of which are available online. Anderson briefly writes of one or more William Clark of whom he has no additional information. So, it is not possible to rule out one of these William Clarks as an ancestor. Likewise it is irresponsible to conclude, without evidence, that one of them IS our ancestor. Firstly, I would like to learn more about our family group in the early years of the Stamford colony to see if there are leads to an ancestor.