Blessed Ferdinand of Portugal - Brief biography of the hero of Pedro Calderón's "El Principe Constante." Ferdinand is also called the Standard-Bearer or el Abanderado. - http://www.saintpatrickdc.org/ss/0605.htm#ferd
Blessed Ferdinand - Prince of Portugal, always pious and known for his generosity. When a military mission of his brother failed, Ferdinand offered himself as a hostage, and died in captivity in 1443. - http://www.newadvent.org/cathen/06039c.htm