Rupert Seely was born on Wednesday, November 9, 1904 in New Jersey. He was the son of Agnes (Doerfel) and Jonathon Seely.

Around 1928, he married Catherine B.

In the 1940 census, Rupert and Catherine are listed as living at 277 First Road, Hammonton Town, Atlantic County, NJ. He was shown as a farm operator. Catherine was listed as a school teacher.

Rupert died on May 21, 1994 in Port St Lucie, Florida at the age of 89. His wife preceded him in death on September 1, 1981. She was 75 years old having been born on July 16, 1906.