Landscapes 09
Official Obituary of

Sandra "JoAnn" Mortenson

April 21, 1951 ~ December 15, 2024 (age 73) 73 Years Old
Obituary Image

Sandra "JoAnn" Mortenson Obituary

Sandra “JoAnn” Mortenson, 73, of Onawa, Iowa passed away unexpectedly Sunday, December 15, 2024 at MercyOne Siouxland Medical Center, Sioux City, Iowa. 

Per JoAnn’s wishes cremation has been accorded and no services will be held at this time. Arrangements are under the direction of Goslar Funeral Home and Monuments, Onawa, Iowa.

Sandra JoAnn was born April 21, 1951 in Onawa, Iowa, the daughter of Roy and Mary (Howard) Brown. She grew up and attended school in Onawa. 

JoAnn Brown and Robert Mortenson were united into marriage February 7, 1977 in Onawa. JoAnn enjoyed raising her children as a stay-at-home mom. Robert passed away September 15, 1995. 

She enjoyed working in her vegetable garden, riding her bike, crosswords and Lifetime movies. 

Survivors include her children, Angela (Danny) Komarek of Onawa, Iowa, Renee Klein of Denison, Iowa, Billy Mortenson of Gassville, Arkansas, and Bobby (Trisha) Mortenson of Council Bluffs, Iowa; seven grandchildren; one great-grandson; and many nieces, nephews, other relatives, and friends. 

She was preceded in death by her husband, Robert Mortenson; parents, Roy and Mary (Howard) Brown; sister, Betty Church; one granddaughter, Katie Mortenson; and one grandson; Andrew Mortenson.

Condolences may be left online for the family at www.goslarfuneralhome.com

To send flowers to the family or plant a tree in memory of Sandra "JoAnn" Mortenson, please visit our floral store.


Services

You can still show your support by sending flowers directly to the family, or by planting a memorial tree in the memory of Sandra "JoAnn" Mortenson
SHARE OBITUARY

© 2026 Goslar Funeral Home and Monuments, LLC. All Rights Reserved. Funeral Home website by CFS & TA | Terms of Use | Privacy Policy | Accessibility