I'm not a member of this family but noticed this entry in the Index to Mexican War Pension Files.Perhaps it will help someone.
IRONSIDE, Edmund J.R.B.A. Widow Mary E. He filed for his pension in California and died in San Diego on 23 Feb 1896. She filed for a widow's pension on 01 Aug 1924 in California, for his service in Co. I, 1st New York Volunteers.