Are you aware of the Comstock genealogy published by Samuel Adams Comstock?It has much info you could probably use.I regret I don't know the specific url, but it is online on more than 1 or two websites (use google search engine).Christopher is not in my direct line but his father william is.
I have the following siblings to Christopher (according to the reference mentioned above):
John b. abt. 1624, d. 1680 in Lyme, CT Samuel b. abt. 1628, d. abt. 1660 Daniel b. 1630 (my ancestor), d. 1683 in New London, CT Elizabeth b. abt. 1633, d. July 1659 Christopher b. abt. 1635, d. Dec. 28, 1702 in Norwalk, CT.