Yes, Sleepy Hollow is definitely a goth band because most of their albums belong to the Gothic Rock and Darkwave genres, which are among the core subgenres of goth music. Albums like Sleepy Hollow, Sleepy Hollow - Legacy, and The Widow are examples of their goth sound.
Sleepy Hollow is located in United States, California, San Diego, active in 1992 — 2000. You can find more information about Sleepy Hollow on their GothDB band page.