I am researching this family, too--I believe that Charles and Rachel were my g-g-g-grandparents (if I can prove their eldest child was Elizabeth Allen, b. 1820, who married Stephen Knowlton in Cuyahoga Co. in 1838). I think Charles's second wife was Esther, however--I find them on the 1850, 1860 and 1870 censuses. I have proof of three children of Charles and Rachel: Laura (b. 1826), m. Lafayette Knowlton; Julia R., b. 1836, m. John Weller; and Mary E., b. 1840, m. Philotas McMahon. Their death records all name their parents as Charles Allen and Rachel Kidney. I see young Charles on the 1850 census. I have not found a Jane yet, but as yet I have the merest bare bones of the family. I think they moved to Ohio from Montrose, Susquehanna Co., PA, around 1835. I would be delighted to collaborate.