Catherine Pinkham - husband of Katharyn is Elmer Jefferson Delk

1940 Census
Address: 7 Ballard Street, St Augustine, St Johns, Florida
all White
Elmer J(efferson) Delk, age 35, born ca 1905, in South Carolina, head
Katharyn A. Delk, age 29, born ca 1911, in Florida, wife
Charlotte L. Delk, age 6, born ca 1934, in Florida, daughter
Charlotte H. Pinkham, age 52, born ca 1888, in Germany, mother-in-law
Slade D. Pinkham, age 38, born ca 1902, in Florida, brother-in-law
William S. Pinkham, age 25, born ca 1915, in Florida, brother-in-law

Burial
https://www.findagrave.com/memorial/150665913/kathryn-pinkham-delk
https://www.findagrave.com/memorial/150665883/elmer-jefferson-delk