Circa July 1852, Oldham (near Manchester), England.
Circa May 1908.
Walter was the son of Isaac Olivant and Rebecca Keyworth Wilkinson, and husband of Jenny Attenison Conner (married 1874, Manhattan, New York).
The couple was living in New York City in 1880, and in Mount Vernon, New York, in 1905. He is probably the Walter O. Wilkinson (?–1908), who is buried in Green-Wood Cemetery, Brooklyn, New York.