Wars of the Roses a "sudden narrowing in the direct line of descent" near the end of his reign. His eldest son, Edward, the Black Prince, had died the year before. Edward III was succeeded on the throne by the Black Prince's only surviving son Richard II, who was only 10 years old. Richard's claim to the throne was based on the principle that the son of an elder brother had priority in the succession over his uncles. Since Richard was a minor, had no siblings, and had three living uncles at the time of Edward III's death, there was considerable uncertainty about who
Prince of Portugal Prince of Portugal Prince of Portugal (Portuguese: "Príncipe de Portugal"), officially Hereditary Prince of Portugal ("Príncipe Herdeiro de Portugal"), or Princess of Portugal, was the title held by the heirs apparent and heirs presumptive to the Kingdom of Portugal, from 1433 to 1645. The title differs from the title Infante of Portugal, which is the title given to all children of the monarch except the first in the line of succession, and is often translated into English as "prince". Due to English tradition introduced to the Portuguese court by Philippa of Lancaster, her son King Edward sought to create a