O'Rourke Pawtucket RI long shot

Long shot to any O'Rourke's from Rhode Island.
We've been looking for our grand father for many years.
We know he was an O'Rourke from Pawtucket RI.
In 1921 he would have been in his mid 20's maybe a little older. He would have been married with at least a couple of children. He had a brief relationship with my grand mother Ruth Macomber.Possibly a co-worker.
She gave birth to his son Donald Francis on July 4,1922.
They had minimal contact after that. We believe he spent his whole life in the Pawtucket area,dying in the mid 1970's.She died in 1979. It's not a lot of information, but might ring a bell with someone on the O'Rourke end.
We know my Dad had half brother's and/or half sister's
who would have family in the area. We'd love to close this
gap in our family genealogy if possible.
Thanks