Found him on the 1940 Jerusalem, Yates, New York census (dist 62-13 img 8) as
Clinton J. Groves age 45, farm laborer.
WWII Draft Registration
Mr. and Mrs. Clinton Groves former residents of Branchport, New York, who are now residing at 1047 Seventh Street, Douglas, Arizona, celebrated their 50th Golden Wedding Anniversary with a buffet supper and open house at the home of their son and daughter-in-law, Mr. and Mrs. Bud Groves, on Sunday March 14, 1971.
Mr. and Mrs. Groves were married March 15, 1921 in Branchport, New York. He was the son of Mr. and Mrs. William Groves, of Woodhull, New York. She was Nellie Dinehart, daughter of Mr. and Mrs. Emerson Dinehart of Branchport.
The reception was attended by approximately 30 friends of the couple and many lovely gifts were received. They have been in Douglas 11
years. They have 5 grandchildren and 1 great grandchild. The couple have a daughter Mrs. Maurice Fingar (Shirley) who resides in Tucson, Arizona. - The Chronicle Express April 8, 1971