could someone help me in finding the date of death for Thomas M Sullivan who died between 1930 and 1940 likely in Pine River, Wisconsin. He was born about 1863 in Canada and married Mary Barden about 1908.

I am also looking for her date of death, after 1940, she was 20 years younger than he was.

http://trees.ancestry.com/tree/16729682/person/421008883

Help appreciated.