Thank you for sharing your data on William and Walter Deane. The data on them tracks well with my own.
I haven't spent much time on those descendents of William and Walter who are not in my direct line, but I show Walter and Eleanor Cogan having 5 children. They are:
Mary, b. 1640, m. Shadrach Wilbore Benjamin, b. 1644, m. Sarah Williams Ezra (my ancestor), b.1646, d. 1732(?) James, b. 164?, d. 1725 Joseph, b. 1654, d. 1729 Could it be that "my" Benjamin (b. 1644) and "your" Benjamin (b. 1699) are father and son?
I would be glad to have a manifest for Walter and his brother, John. I believe they came in the ship "Speedwell" in 1635 or 1636. They stayed for a while in Dorchester, and were established in Taunton in 1637.