Álvaro Gil Cabral (Cabral's great-great-grandfather and a frontier military commander) was one of the few Portuguese nobles to remain loyal to Dom João I, King of Portugal during the war against the King of Castile.
Álvaro Gil Cabral (ayah dari kakek buyut Cabral dan seorang komandan militer di perbatasan) adalah salah seorang dari sedikit bangsawan Portugis yang tetap setia kepada Dom João I, Raja Portugal selama peperangan melawan Raja Kastilia.