Please answer the following question: What type of details about infante fernando , lord of eca can be gathered from the following bio? Bio: infante dom fernando of portugal , later de eza or de eca -lrb- -rrb- -lrb- 1378 -- eza ? -rrb- was the son of portuguese infant joao , duke of valencia de campos . joao , was a son of king peter i of portugal with powerful and literary famous for several centuries in several european languages , galician lady ines de castro , '' the queen who ruled after her death '' . his father , infante john , duke of valencia de campos , -lrb- * coimbra 1349 - + salamanca 1397 -rrb- , buried there , had been legitimized as infant of portugal , and became duque de valencia de campos in castile through his marriage to one of the bastards of bastard king henry ii of castile . fernando 's father john , had married in 1376 , -lrb- 1st marriage -rrb- , castilian lady maria tellez de menezes , assassinated shortly after in 1378 by her 11 years junior in age husband , who had been alerted of her disloyalty , apparently . then , he married again in valencia de campos in 1378 constanza de castilla , senora de valencia de campos , 42 18 ' n , 531 ' w , illegitimate daughter of bastard king enrique ii of castile , -lrb- 1334 - king by assassination in 1369 of legitimate brother pedro i of castile - 1379 -rrb- , who was therefore the step mother of orphaned fernando de portugal . he became thus consort duke of valencia de campos , in the former kingdom of leon , by accepting one of the bastard daughters , named constanza , of the new king -lrb- since 1369 , aged 35 , through assassination -rrb- , the royal bastard known as henry ii of castile , probably poisoned by the king of navarre in 1379 , aged only around 44-45 . it must be stressed here , that the black death in europe of around 1349 - 1350 , seems to have modified in the whole of the european continent after those times , all kinds of moral or sexual standards within christianity , to say the least , both in men and women . we are threading also in the dynastic changes , working trades and working people shortages 1350 - 1450 , which could be described as the '' century of...
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