I found this on the Chenango County, NY site regarding the Nichols, Sherwood families & Sylvia Fox Taintor:
TAINTOR, Mrs. Sylvia FOX, died Dec. 30, 1891, aged 78.
So, born ca 1813.
Archibald Nichols, son of Ishmael and Lydia (HOLL) Nichols, was born June 14, 1787; place of birth unknown; died December 11, 1838, in Wellsboro, Pa.; married Betsey SHERWOOD, daughter of Levi Sherwood of Oxford. They moved to Wellsboro, Pa., about the year 1825, where he engaged in the lumbering business on West Branch of Pine Creek. While a resident of Oxford he owned the farm near Riverview cemetery, now known as the George BROWN place. Children:
LEVI I., born December --, 1809, in Oxford; died November 14, 1868, in Wellsboro, Pa.; married Sarah J. BROWN, daughter of Thomas Brown of Oxford, who died in Wellsboro, aged 84. Mr. Nichols was a fine musician, and while yet very young played the organ in the Presbyterian church. Like Mrs. Sylvia FOX TAINTOR, his cousin, he received his musical talent from the Sherwoods. He moved to Wellsboro about the year 1831, and became largely identified with the material interests of Tioga county. He was engaged in mercantile business with his brother Enos, and served a term as Associate Judge upon the county bench. He was the father of thirteen children, one of whom, Mrs. Sarah Nichols WILLIAMS, still resides in Wellsboro, and has in her possession a piano given her father by his grandfather, and which was the first one taken into Tioga county, Pa.
Lydia Maria, died in youth,, Enos A., unmarried; engaged in mercantile business with his brother Levi in Wellsboro; died at the age of 30 years. Mary E., married William BACHE, one of the prominent citizens of Wellsboro.
You most likely have this, but it implies that Sylvia is a Sherwwod or perhaps a Sherwood married a Fox & Sherwood is her middle name.But, the Taintor Bible lists her as MRS.