Duro was born in Brieva de Cameros, La Rioja,[2] and he died in the Principality of Asturias in 1886.

His descendants were created Marquesses of La Felguera by King Alfonso XIII.

In addition, Duro was awarded the Order of Isabella the Catholic and the Légion d'honneur from the French government.

He was buried in La Felguera, where the workers of his factory raised a big monument.

Today the company that he created is called "Duro Felguera" and it has been traded on the Spanish stock exchange since 1902.