The US 1900 census of New York, Monroe, Gates Township, has the birth date of William Kewley as June 1831, b.Isle of Man, farmer, married to Fanny (b.Ireland Aug.1837). They both immigrated 1851, married 1856 [FamilySearch pilot site].
In 1900 they have children Lissie (b.Nov 1867) and Charles (b.June? 1861) with them, both b. New York.

I can't find a bapt which matches this birth date. Sometimes US MIs include exact birth dates.

Sue