There is a document, during the time of Catholic kings, where Catholic kings ask pedro Madruga, 150000 marvels, for attacking a ship in Sanlucar de Barrameda, there is another document of the Catholic kings, to capture to Michelote. Michelote was a Basque fisherman, who becomes a pirate, and attacks an English ship in Bristol, slitting the 46 sailors of the ship. Michelote was the nephew of Guillaume Cazenove coullon’s wife, "Colon"in Castille. Michelote asks Pedro Madruga to hide the treasure in his fief. is the only document where there's relationship of Guillaume Cazenove with Pedro Maadruga. Cristobal Colón fought with Guillaume Cazenove, in the battle of cap of San Vicente. In the defense of Pontevedra, there was a Portuguese galley in Pontevedra. The Portuguese were helping him.Ok. I like to be impressed.
By the way, you stated “Pedro Madruga was a noble galician in the service of King of Portugal and have been un corsair with Alfonso V”, what do we know for sure about the activities of Pedro Madruga as a corsair, and what sources we have about it?
When the duke of Benavente wants to conquer the Coruña, he asks for to Pedro Madruga for naval aid. Pedro Madruga will ask for boats to Portugal (It is clear that to the king), but When pedro gets in the Coruña, mysteriously turns around and the Duke of Benavente gets angry. You don’t know where he went. that time, coincides with the trip of Portugal and Denmark to Greenland and colon says he was in Greenland.