Marquess of Soleminis is a title granted in 1651 by Philip IV, king of Spain and king of Sardinia, to the Sardinian nobleman Francisco Angel Vico Sonza (or Vico Zonza).
The eldest son of Don Sebastian Zonza and Doña Isabel Vico, Francisco Vico Zonza, was allowed to use the maternal surname in order not to let her family extinguish and to inherit the fief of Soleminis from the maternal grandfather Don Francisco Vico Artea; upon that fief, he was created the first Marquis of Soleminis.
The fief had been granted to Don Francisco Vico Artea (who had been using the maternal surname first himself) in 1637 as a partial payment of his salaries as a regente (member) in the Council of Aragon, the first Sardinian ever appointed to the post.
The fief passed over from father to son for three generations, until it passed over to Esperanza, the last Marquis's only surviving child, according to the Spanish and Sardinian succession rules at that time which allowed female succession in case of lack of sons.
Sources:[1][2] Present holder is a nephew of the latter, also called Vincenzo, with his younger brother as heir presumptive.