Yes, Brotherhood of Pagans is definitely a goth band because most of their albums belong to the Gothic Rock and Second Wave of Gothic Rock genres, which are among the core subgenres of goth music. Albums like Tales Of Vampires, Only Once, and Inquisition Day are examples of their goth sound.
Brotherhood of Pagans is located in France, Pierrefonds, active in 1990 — 1990, 2006 — present. You can find more information about Brotherhood of Pagans on their GothDB band page.
Want to check if another band is goth? Search other bands.