I have to ask you to refresh my memory. I googled the name and there about a half-dozen famous David Parkers.
It was a few years ago and a pretty big issue. David Parker was a dad in Lexington Massachusetts, and as I recall, his son brought home a book from school. Not sure of the title, but it was something like "My two moms". And all hell broke loose, in Lexington MA and on TOS, lol.