"That sounds like Aunt Isabel. They always called me Patricia there. Don't you think, papa, now that I'm getting so grown up, I ought to be called Patricia? Patty is such a baby name.""Patty is good enough for me," said Mr. Fairfield.
1904, Carolyn Wells, “Shopping”, in Patty at Home, New York, N.Y.: Dodd, Mead & Company, page 56