On 10 April, Good Friday, His Excellency Alberto de Elzaburu y Márquez, Marquis of La Esperanza, member of the Board of Trustees of the Fundación Casa Ducal de Medinaceli for seventeen years, passed away. Until the end of his days he presided over the Elzaburu firm, founded in 1865, being the fourth generation of his family to dedicate his life to the strengthening of intellectual and industrial property rights. An extraordinary polyglot and cosmopolitan even in his demeanour and gestures, he put both qualities at the service of Spain's role in the world by getting Spanish declared the official language of the AIPPI in 1972, an association of which his grandfather was the founder in 1897. The Christian humanism in which he was educated and practised with his frank discretion naturally inclined him towards the foundational world, continuing the family representation in the centenary Sociedad Protectora de Niños and creating and endowing his own foundation for the defence of intellectual and industrial property as the foundation of innovation and progress. The aforementioned family historical continuity and his concern for the conservation of Spain's historical heritage fitted perfectly with the aims and means of the Medinaceli Foundation, which he promoted with singular sensitivity, a task that we will never forget and for which we will never be able to be sufficiently grateful.