William Parker Watson of Winthrop Maine 1876

I am looking for the death of William and in census after 1920.

William P Watson was born on 10 JUL 1876 in Winthrop, Kennebec, Maine, USA

He lived in the following places
1880 Chesterville, Franklin, Maine, USA
1900 Madison, Somerset, Maine
1910 Farmington, Franklin, Maine
1920 Merrimac, Essex, Massachusetts

He Married Gertrude Merchant daughter of Harrison and Sarah Cates on 24 May 1902 in Wilton, Maine

They had 5 children
Merle Watson 1903-1993
Louis A Watson 1906-1996
Vivian M Watson 1906-1910
Irving R Watson 1910- 1983
Lawrence L Watson 1912-1980

He had 2 brothers
Charles N Watson 1871-1947
Alfred E Watson 1873-1927