In the show, ignoring any chapter or comic books, the only griffons with canon names are Gilda and Gustave. The other three animated griffons have community-voted placeholder names. "Genevieve" was one of the proposed names for this character, but the name Natalya eventually won. You can see other names here: mlp.wikia.com/wiki/List_of_non… Natalya, Irma, and Gaston were the winning names, but none of them are canon. They're just placeholder names for the wiki, and for convenience sake and to keep things consistent across fan works, most artists and writers (and Derpibooru tags) use the placeholder names on the wiki.