Question: Who was nicknamed "the Magnanimous" and a major love interest to Luisa Margarida de Barros Portugal?

Context paragraphs:
A Viuvinha (film): A Viuvinha is a 1914 Brazilian silent romantic drama film directed by Luiz de Barros and starring Linda Bianchi and Gita de Barros.

Social Progressive Party: The Progressive Social Party (Portuguese: "Partido Social Progressista" , PSP) was a populist, conservative political party in Brazil between 1946 and 1965, led by Adhemar de Barros.  The result of a merger between smaller parties, it was, in practice, the fourth largest party after the Social Democratic Party, the National Democratic Union and the Brazilian Labour Party in the 1947-1965 era.  João Café Filho, the Vice President of Getúlio Vargas and later President after Vargas committed suicide.  It was extremely strong in the State of São Paulo, under the leader of Adhemar de Barros, who held the office of Governor and Mayor of São Paulo during this period, besides being a candidate for president in 1960, winning over 20% of the vote.  Like all parties of the 1947-1965 era, it was abolished by the military government.

Luísa de Barros, Countess of Barral: Luísa Margarida de Barros Portugal (13 April 1816 – January 1891), later Countess of Barral, was a Brazilian noble, preceptor of Brazilian princesses Isabel and Leopoldina, rumored to be the major love interest of Pedro II of Brazil and later part of Louis Philippe I of France's court.

Fabiana de Barros: Fabiana de Barros (born November 27, 1957 in São Paulo) is a Swiss artist of Brazilian origin.  She is the daughter of one of the most striking figures of Brazilian photography and modern art, Geraldo de Barros.  She works and lives in Geneva and São Paulo.

Cantabrian stelae: The Cantabrian stelae are monolithic stone disks of different sizes, whose early precedents were carved in the last centuries before the romanization of Cantabria in northern Iberian Peninsula.  Cantabrian stelae include swastikas, triskeles, crosses, spirals, helixes, warriors or pre-Roman funerary representations among their usual ornamentation.  The most famous is called "Estela de Barros" (Barros Stele) which can be visited in the "Parque de las Estelas" (Stelae Park) in the town of Barros, in Los Corrales de Buelna.  This stele is part of the current coat of arms of Cantabria and the meaning of tetraskelion would be related to solar worship.  The Barros stele giant size represents the main difference to the smaller stelae found in other parts of northern Spain.  In addition to the "Estela de Barros", we can see another larger, fragmented stele in the "Parque de las Estelas".

Tomé de Barros Queirós: Tomé José de Barros Queirós (Thomé José de Barros Queiroz in Portuguese of the early 20th century; 2 February 1872 in Ílhavo – 5 May 1925 in Lisbon) was a Portuguese trader, capitalist and politician of the period of the Portuguese First Republic.  Among others posts, he served as member of the parliament, Minister of Finances and eventually President of the Ministry (Prime Minister).  He was also a member of the Masonry.

Théo de Barros: Teófilo Augusto de Barros Neto better known as Theo de Barros is a Brazilian composer.  Since the 1960s he has released and participated on albums with other Brazilian artists.

Jose Acacio de Barros: José Acacio de Barros (born 1967, Barra Mansa, RJ, Brazil) is a Brazilian-American physicist and philosopher with contributions to the foundations of quantum mechanics, quantum cosmology, and quantum cognition.  Dr. de Barros received his PhD in Physics from the Centro Brasileiro de Pesquisas Fisicas (CBPF) in 1991 under the supervision of Francisco Antonio Doria and Antonio Fernandes da Fonseca Teixeira (he was also informally under the supervision of Newton da Costa).  Since 2007 he has been in the Liberal Studies faculty of San Francisco State University.  Before going to San Francisco, he was an Associate Professor of Physics at the Federal University at Juiz de Fora, Brazil, and he was a Visiting Associate Professor at the Center for the Study of Language and Information at Stanford University, and has also held visiting positions at the Centro Brasileiro de Pesquisas Fisicas.  Dr. de Barros has been a long-term collaborator of Philosopher Patrick Suppes, with whom he published extensively on the foundations of quantum mechanics and joint probabilities.  Among his most influential work is his joint research with Nelson Pinto-Neto, in which Bohm's interpretation of quantum mechanics was applied to quantum cosmology, paving the way for bouncing models using realistic interpretation of quantum mechanics.  His recent work attempts to give a neurophysiological foundation to quantum-like effects in psychology.  He is also among the main proponents, in collaboration with Gary Oas, of the use of negative probabilities to understand quantum systems.

Estádio Fonte Luminosa: Estádio Dr. Adhemar de Barros, usually known as Estádio Fonte Luminosa, or just Fonte Luminosa, is a football (soccer) stadium in Araraquara, Brazil.  The stadium has a maximum capacity of 25,000.  It was inaugurated in 1951.  The stadium is owned by the Araraquara City Hall, and its formal name honors Adhemar Pereira de Barros, who was the governor of São Paulo state from 1938 to 1941, 1947 to 1951, and 1963 to 1966.  Associação Ferroviária de Esportes usually plays their home matches at the stadium.  "Fonte Luminosa" means "Luminous Fountain".

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.  Born in Rio de Janeiro, he was the seventh child of Emperor Dom Pedro I of Brazil and Empress Dona Maria Leopoldina and thus a member of the Brazilian branch of the House of Braganza.  His father's abrupt abdication and departure to Europe in 1831 left a five-year-old Pedro II as Emperor and led to a grim and lonely childhood and adolescence.  Obliged to spend his time studying in preparation for rule, he knew only brief moments of happiness and encountered few friends of his age.  His experiences with court intrigues and political disputes during this period greatly affected his later character; he grew into a man with a strong sense of duty and devotion toward his country and his people, yet increasingly resentful of his role as monarch.

Supporting paragraphs: Luísa de Barros, Countess of Barral Pedro II of Brazil
Answer: Pedro II of Brazil