I have an alternative explaination for some of the names. Usually feminine names are longer--often just longer versions of the male equivalent. Think Patrick v

I have an alternative explaination for some of the names. Usually feminine names are longer--often just longer versions of the male equivalent. Think Patrick vs Patricia, Jesse vs Jessica, Robert vs Roberta etc. It seems a lot of the gender switching names started as short forms of longer names, but then just became full names. Eg Bobby, Jackie, Jessie.