For Edith Teske Heyn, her memorial has the wrong DOD:
Minnesota, Death Index, 1908-2002
Name: Mrs. Otto (Edith ) Heyn
Death Date: 14 Mar 1945 (memorial has 15 Mar 1945)
Death County: Olmsted
State File Number: 010241
Certificate Number: 010241
Certificate Year: 1945
Record Number: 973848
Just to be sure, I found the image of the death cert - attached, in two pages.
The memorial (and the headstone) have her birth year as 1893, but the death cert has her full DOB as 9 Oct 1892.