Thanks for the reply but already checked everything you suggested.
This Shanahan family supposedly traveled through Canada from Alaska to Washington. Not sure where they might have stopped/stayed in Canada and it's worth a shot asking.
Don't know where from in Alaska.
Don't know 1st destination after Alaska.
His one known child didn't know the father.
He did not mention relatives when arrested in Texas.
He was in guardianship at a nursing home as an incapacitated person when he passed on and the county didn't have any records of relatives, nor did they find any.
Death certificate shows no relatives.
No obit published.