User blog comment:Kakoolookiyam/Angelica's Last Name/@comment-189566-20120128055652

We usually go by what the credits say for the characters' names in the articles. In this case, she's listed only as "Angelica." See this screenshot I took

IMDB and YouTube are not reliable sources (unless, of course, it's an official Disney video), because users on IMDB can edit any page, just like Wikipedia.

Anyway, according to a couple of official sources...Angelica doesn't have a last name. (With the exception of Philip.)