Ca 1875 Jacob married Gertrude C. Lape. Born in Oct 1835 in New York. Gertrude C. died in 1910. Buried in Mellenville Union Cemetery.
1910 Federal Census. Hudson Ward 4, Columbia County, New York
Roll 933, page 6A
366 Diamond Street
Alexander E. Johnson, head, 33, m. 9 years, electrician, electric RR
Frances Johnson, wife, 33, m. 9 years, 3 children, all living
B. Lathrop Johnson, son, 8
Robert I. Johnson, son, 6
Gertrude J. Johnson, , daugher, 4
Bertrude Boice, mother-in-law76, widowed, 2 children, 1 living
William Baernger, boarder, 20, boxwalker[?], box factory
All were born in New York as were their parents.