Despite their sphere of influence being most prominent in Italy, the Telvanni gained immense wealth and fortunes when they began settling in Peniche, Portugal, where they subsequently married one another to members of the Afonsine Dynasty, from which squib Vítor Telvanni was a descendant. The Telvanni bloodline eventually became extinct; the last remaining members of the family lived in Great Britain under the protection of the Crane family when they were all slaughtered by Lord Voldemort during the First Wizarding War.