Toensing and In Memoriam list his birth year as 1883. The Minnesota Legislative Manuals, 1915 and 1917 list his birth year as 1884.
He came to Virginia, Minnesota in October 1893. He moved to Minneapolis, Minnesota in 1919. He moved to Hollywood, California in 1924.
"Orrin Harold Griggs was, without question, a principal developer of the beginnings on the Iron Range, which have brought it to its present point of development." (In Memoriam: Senators Claude Baughman, O.H. Griggs, Charles A. Lund, Archie H. Miller, Hans C. Pedersen, Edward R. Ribenack, and R.C. Sletten. State of Minnesota Senate Chamber, April 3, 1959, p. 6.)
He died in Hollywood, California.