Namesakes
Brazilian Presidents:
1 president
Afonso Pena 1906-1909 
Notable Explorers and Adventurers:
1 explorer
Afonso de Albuquerque 1453-1515
Portuguese Kings and Queens:
6 kings
King Afonso I the Conqueror 1139-1185
King Afonso II the Fat 1212-1223
King Afonso III 1248-1279
King Afonso IV the Brave 1325-1357
King Afonso V the African 1438-1477; 1477-1481
King Afonso VI the Victorious 1656-1683
Portuguese Presidents and Prime Ministers:
1 prime minister
(prime minister) Afonso Costa 1913-1914; 1915-1916; 1917