Sounds like you have a handle on this particular line. Perhaps you can validate some data I have and my assumptions thereof. In the 1850 census for Smithtown I have Brewster, Ann & John B. living with Phineas. Assumption=Phineas is father of Brewster. In the 1840 census for Smithtown I have a Phineas with a son in the right age group. Ten houses down the road I have a Joseph. H. in the same age group as Phineas. Could they be brothers? Joseph b. 1765 is my brickwall. Do you have anything back from Phineas?