I have Jane listed in the 1870-1910 censuses with Benjamin and I have Margaret with him in the 1930 census...therefore I've listed Jane as his first wife.
The children (all with Jane) I have listed are:
William Lee Ketchie (1868-1955)
George Thomas Ketchie (27 Aug 1869-24 Feb 1960)
John Ketchie (about Sept 1869-? May be twin of George or may be George mistakenly listed as John in the 1970 census listing)
Laura Ellen (15 Dec 1873-11 Sep 1957)
James E. Calvin Ketchie(6 Apr 1875-Dec 1965)
One or two sons...Ernest and Stephen or Stanly Ernest (Jul 1881-?) and (23 June 1882-1 May 1954)
Edward Pearson Ketchie (6 Feb 1888-July 1978)
If you have any information on the Stephen/Stanly/Ernest son(s), I'd be very interested in finding out about them.