I don't have any specific info on your grandfather-in-law, however I have several Perritts in my line with Hardy as a middle name. Some of my Perritts migrated to Texas from Copiah Co, MS. Try searching the 1920 census in Texas just for the surname. The Perritt name is commonly misspelled in census records, so you may have to gig a bit. I'll look for him myself just to see what I can come up with. I pesonally haven't had much luck tracking my Perritt relatives in Texas.