Sarah was born 1808 in Saratoga Co per query, or in Western, Oneida Co. (per pg 327 of Doty Gen.).Her parents bot land in Western in 1808, so it depends on wether they had actually moved there before or after she was born.
Pg. 303 Cornelius Doty b. 1736 Basking Ridge, NJ. - married -wife's name uniknown.Removed to Cambridge,Washington Co., NY.May later have lived in Halfmoon, Saratoga Co., NY. He had 5 children.
Pg. 327 -eldest son Cornelius b. a.1764 prob. Cambridge, married there a wife, poss. Mary Ann.They removed to Halfmoon, and later to Western. Had 6 children.#3 was John b. 1801 who married 1st (not listed in book) 2nd Eliza Ann Putnam (no birth date or parents shown). They likely moved west by 1846.They lived in 1886 at Wampum, Wisconsin. This is the John and wife Eliza you mentioned.
pg. 327 -2nd son John b. a. 1768-70 prob. Cambridge m. Catharine Phillips.They had 10 children.#7 was SARAH b. 1808 M. SCHUYLER BUCK.
Either I am mis-reading some of what you are saying or the book is in error.
Simple way to tell: e-mail me with your snail-mail address, will photo copy and send applicable pages.
The doty gen. was pub. 1897, and like all gens. contains errors that were not caught.