On 23 November 1942, when Jens Rosenquist was 82 years old, his daughter, Anna Rosenquist, died in Provo, Utah, Utah, United States. She was 58 years old at the time of her death.
Jens Rosenquist died at the age of 83 on 26 March 1944 in Pleasant Grove. He was buried, plot A-19-020-02, at Pleasant Grove City Cemetery, which is located at 500 North Main in Pleasant Grove, Utah, Utah, United States. His Find a Grave ID: 38337