I have the book "John Wetherbee of Marlboro and Stow Massachusetts" Volume one. by Ethel Wetherbee Mazza in 1991. I do not believe she ever finished volume 2 before her death. There are several Olivers in the book but only one comes close to what your looking for. On page 184; Oliver Wetherbee Jr. (son of Oliver) was b.May 31,1793/94 in MA. He married Sarah (unknown) in either Haverhill, NH or Granville, NY she died at Atlas, Pike County, IL. They were in NY until they showed up on the 1840 census in IL. Sylvia is not listed but a dau. in 1830 was 5-10 years old. Oliver m. a second time in IL.