The "errors and oddities" page contained a link to the strip I refer to above but nothing pointing to a strip calling him "Forsythe." I was unable to find any such strip by searching and asked Stephanie whether any such strip existed. She replied that "Who's Who" was the only place where the "Forsythe" name appeared. So I asked a very silly question. Why not change the "Who's Who" entry to match what actually occurs in the strip? Steph agreed, and behold! If you scroll down to Gerald's entry in the left-hand menu, you will see that he now appears as Gerald Delaney.
In the days of "April's Real Blog," we had a running gag that Gerald's family had changed their name from "Delaney" to "Forsythe" in order to hide from a shameful incident that had happened, sullying the family name. Our Gerald's full name was Gerald Millicent Delaney Forsythe.
Now I can say that the shame has passed and the "Delaney" good name restored. ;)