Frank was born on December 10, 1925, in Grundy County, Iowa, the son of Harry Morton and Alta Pearl (Taylor) Adair.

He attended grade school in Reinbeck. Frank later graduated from Toledo High School.

On April 22, 1950, he was united in marriage to Floriss Davis at the Toledo Methodist Church.

Frank started farming with his father, and then was appointed Career Underwriter for Tama County Farm Bureau Insurance, ultimately accepting a position as Field Underwriter for Farm Bureau. Frank was a lifelong member of the Methodist Church and was a longtime member of Toledo-Tama Kiwanis. He was active in preserving the Pioneer Cemeteries in Tama County. Frank was an avid reader. He enjoyed collecting antiques and refinishing furniture. His family was his pride and joy.

Survivors include his wife of seventy years, Floriss, of Toledo; children: Diane (Larry) Criswell, of Kickapoo, IL, Debra (Timothy) Miller, of Humboldt, Denise (Randy) Wade, of North English, Damon (Kaye) Adair, of Perry, Christi (Roger) Aikin, of Bloomington, IL, and CeAnn (Mike) Kreun, of Bloomington, IL; grandchildren: Cara (Beau) Dunham, Laura (Dan) Ramos, Ethan (Rebecca) Miller, Carly (Brent) Bauman, Levi (Crystal) Miller, Kelsey (Duane) Johnson, Kyle (Sara) Wade, Cole (Jenny) Adair, Quinn (Lauren) Adair, Clair (Chuck) Casagrande, Laine (Zach) Benchley, Paige Smid, Brant (Courtney) Kreun, Natalie Kreun and Lily Kreun; twenty-one great grandchildren and several nieces and nephews.

Preceding him in death were his parents; son-in-law, Dirk Smid; siblings: Maxene Adair, Merlen (Jeanette) Adair, Florence (Don) Schildroth, Harry “Bud” (Collene) Adair and Dale Adair as a child.

In lieu of flowers, memorials may be directed to Christ United Methodist Church in Toledo or Iowa River Hospice in Marshalltown.