Joe,
I have never heard of him either. I also did some googling and found these pieces. I'd guess you have also found them, but in case you have not, here are the links. Nothing of relevance to GCA, but a link to a presumed relative who may know more.( Janet Moir Mccaffrey j.mccaffrey@comcast.net)
Wallace Moir gravesiteHis father James Moir gravesitePresumed relative Janet Moir Mccaffrey infoIf this is your man, his father was a Scottish immigrant, a tailor and a soldier, who became, i.a., mayor of Scranton. His name is ( or was) on the cornerstone of Scranton City Hall.
Wallace Moir
Birth: Jul. 25, 1875
Scranton
Lackawanna County
Pennsylvania, USA
Death: Sep. 18, 1956
Philadelphia
Philadelphia County
Pennsylvania, USA
Born in Scranton to the Hon. James Moir (former mayor of Scranton), married Daisy Mae Wenz and had five children: Florence Mildred Moir (Pace), Wallace Wenz Moir, Grace Dorothy Moir (Morris, Crouch), Frances Elizabeth Moir (Huff, Langschur), and James Moir.