John L. Hill is not a Cassingham descendant, but two of his children married Cassingham descendants. He was born 1 Dec 1891 in Gardner, Grundy, Illinois. He died 14 Jul 1974 at age 82 in Morris, Grundy, Illinois.
On 26 Nov 1913, he married Gertrude Marie Gunderson in Gardner, Grundy, Illinois. She was born 2 Jun 1895 in Yorkville, Kendall, Illinois. She died 10 Dec 1947 at age 52 in Mazon, Grundy, Illinois.
John L. Hill and Gertrude Marie Gunderson had 11 children. Two of them married Cassingham descendants:
- Lester Marion Hill was born 16 Nov 1923 in Gardner, Grundy, Illinois.
- Charline Annette Hill was born 5 Sep 1926 in Gardner, Grundy, Illinois.