common man

The next few questions are from India quiz-Festember X.

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__________ de Albuquerque(the guy in the pic)(1453 – December 16, 1515) was a Portuguese nobleman, a naval general officer whose military and administrative activities as second governor of Portuguese India conquered and established the Portuguese colonial empire in the Indian ocean. He is generally considered a world conquest military genius. He was responsible for building numerous fortresses to defend key points that he was taking and established a net of diplomatic relations. Shortly before his death he was awarded viceroy and "Duke of Goa" by king Manuel I of Portugal, being the first Portuguese duke not from the royal family, and the first Portuguese title landed overseas.

Despite his fame, the city of Albuquerque in New Mexico is not named after him. It was named after a Spanish Viceroy of Mexico named Don Francisco Fernández de la Cueva, who also held the title Duke of Alburquerque. There is, however, a town near the Spanish-Portuguese border named Alburquerque which may be the root of both names.

However he is immortalized in the form of something else which he used to bring on his journeys to Goa......what?
or
Id the blank.