William Fillyaw (b. c1816, SC) married Rebecca Taunton on 2 Aug. 1841 in Pike Co., AL. Rebecca was the daughter of Henry Taunton III. In the 1840 census for Pike Co., Henry Taunton was listed 3 households from Richard Fillyaw; was this William's father? Richard had a male living in his household of the correct age to be William.
By the way, the third child of William and Rebecca was James, not Janis. I've seen the original 1850 Coffee Co., AL census sheet, and while the handwriting could be taken either way, the child was listed as male.
Do you have any additional info on any of William and Rebecca's other children? I can give you 3 more generations back on the Taunton line, if you're interested. If so, please email me directly at firstname.lastname@example.org.