William and Ella died on the same day, either 9 Mar 1942 or 19 Mar 1942.
In addition, William's birth year is shown as 1827. If true, he not only was a good deal older than Ella, but he would have been 114 when he died, not likely since the Flood. Anyway, I changed it, assuming it to be another of many misprints in the source document.