Complex sentence: Great-uncle of Pedro Fernández de Castro y Andrade, Conde de Lemos; closely linked to the city of Galicia by Monforte de Lemos and was the founder of the College of Our Lady of Antigua.
Split into simpler sentences: Great-uncle of Pedro Fernández de Castro y Andrade, Conde de Lemos. He was closely linked to the city of Monforte de Lemos in Galicia, where he was the founder of the College of Our Lady of Antigua.