Are we sure that warty is a first name? I think it is a nickname, suggesting that he has several warts. The German translation, Warzenharris, seems to support this theory.--Rodolphus (talk) 20:23, December 7, 2014 (UTC)

I think it's a nickname because he works with frogs. -- Saxon 22:49, December 7, 2014 (UTC)

Bumping.--Rodolphus (talk) 16:51, July 15, 2017 (UTC)

Doesn't seem any way to really tell. It's simply given as "Warty Harris" in Harry Potter and the Order of the Phoenix, Chapter 5 (The Order of the Phoenix). --Ironyak1 (talk) 17:00, July 15, 2017 (UTC)