Katherine married Horace Blakeley Underhill. Horace was born on 26 Dec 1876 in Aurora, Erie, New York; died on 25 Jan 1960 in South Wales, Erie, New York. [Group Sheet]

1. Arthur Ralph Underhill was born on 7 Jan 1902 in Aurora, Erie, New York; died in May 1982 in South Wales, Erie, New York; was buried in South Wales, Erie, New York.
2. Maybelle Underhill was born on 1 May 1906 in Aurora, Erie, New York; died on 11 May 1996 in Butte, California; was buried in Sardinia, Erie, New York.
3. Helen Gertrude Underhill was born on 3 Nov 1909 in Aurora, Erie, New York; died on 5 Nov 1991 in Attica, Wyoming, New York.
4. Florence G. Underhill was born on 23 Jun 1916 in Aurora, Erie, New York; died on 4 Mar 2002 in Holland, Erie, New York.