Question: Who was nicknamed "the Magnanimous" and a major love interest to Luisa Margarida de Barros Portugal?
Sentence (from "Pedro II of Brazil"): Dom Pedro II (English: Peter" "II; 2 December 1825 – 5 December 1891), nicknamed "the Magnanimous", was the second and last ruler of the Empire of Brazil, reigning for over 58 years.
Relevant evidence: Yes