Gerontology Wiki
Thea Theissen
Thea Theissen
Theissen on her 110th birthday in 2017
Birth: 28 December 1907
Breckenridge, Minnesota, USA
Death: 23 May 2018
Merrill, Wisconsin, USA
Age: 110 years, 146 days
Country: United StatesUSA

Rose M. “Thea” Theissen (neé Schaefer; 28 December 1907 – 23 May 2018) was an American supercentenarian whose age is currently unvalidated by the Gerontology Research Group.


Theissen was born to Mary and Clement Schaefer in Breckenridge, Minnesota, USA, on 28 December 1907. She married Elmer Theissen in 1929, and the couple had three children. Elmer owned a drug store in Fort Madison, Iowa, and Thea worked with him at the store. They were married for 62 years before Elmer died in 1991.

Theissen lived with her daughter in Merrill, Wisconsin. She reportedly enjoyed knitting, playing cards, and reading. She became a supercentenarian in December 2017.

Theissen died in Merrill, Wisconsin, USA on 23 May 2018 at the age of 110 years, 146 days.