DAVID MICHAEL MORTENSEN, 34, formerly of Griswold, died Saturday, Aug. 23rd, 2025 at Diamondhead Lake in Guthrie County. A Celebration of Life Memorial Service for DAVID MORTENSEN will be held 10:30-a.m. Thursday, Aug. 28th, at the Griswold Central Church of Christ. Rieken-Duhn Funeral Home in Griswold is assisting the family.

Visitation with the family will be held on Wednesday, August 27, 2025, from 6:00 PM until 8:30 PM, at the Griswold Central Church of Christ.

DAVID MORTENSEN is survived by:

His parents – Richard & Sue [Grove] Mortensen.

His brother – Bradley (Lori) Mortensen.

His sister – Jennifer (Brennan) Massiff.

His paternal grandmother – Avis Mortensen.

Nieces, nephews, other family members and many friends.