The American House sold around 5 August 1909. The new owner, J. J. McCarthy, was a 17-year veteran of the police force. So, yes, Patrick’s marriage troubles may have prompted the sale.
The Patrick that died in 1918 was born in Suffield, the son of Patrick Hartnett, so definitely not your guy.
Just read the posted link about Patrick’s father Maurice. Died at Andersonville. Ugh. The worst of the Civil War Camps.
A few more interesting little details:
19 January 1896: It was reported that Patrick Hartnett, of Warren, had bought the Central House at North Brookfield. The town only had two hotels. Not sure if he continued to work at both of them.
1898-1901: He was the proprietor of the Batcheller House in North Brookfield for three years. This is where he was on that 1900 census.
https://www.digitalcommonwealth.org/search/commonwealth:fb494g99121 July 1898 Alleged Illegal Liquor Selling: North Brookfield was a no licence town. After a Tuesday night raid by town constables on the Batcheller House, five kegs of beer were found under the floor of the billiard room, the entrance being through a trap door at the side of the room, over which chairs had been placed.
28 March 1901: Leased American House property in Springfield.
1907 wedding: “They left town in the groom’s automobile about 10 o’clock and have gone on a two-weeks wedding trip to Washington and Jamestown. They received many handsome presents and the groom’s gift to the bride was a $1000 check."