The origin of Menezes comes from a muncipality in the north of spain "Meneses de campos" PALANCIA. The first Lord of Meneses was TELO PEREZ grandson of Queen Urraca of Castille
daughter of bertrand de reynal and Elvira perez de Lara.Telo Perez was the first DE MENESES. some where in the fourteen century Spain split and Portugal was born and was spelt as MENEZES. May be you have some royal Blood.