| Marquisate of Bonanza | |
| Creation Date: | 6 February 1902 |
| Heir Apparent: | Bibiana María González-Gordon |
Marquis of Bonanza (Spanish; Castilian: Marquesado de Bonanza) is a hereditary title in the Spanish nobility. The marquisate was bestowed by Maria Christina of Austria as Queen Regnant on behalf of her son Alfonso XIII of Spain on Manuel Críspulo González y Soto, by Royal Decree on 6 February 1902.[1] Bonanza refers to a port of Sanlúcar de Barrameda, near the home base of the González family.
Isabel González y de Ágreda officially ceded the title to her cousin Manuel María González Gordon on 13 November 1969.[2] The father of Manuel María was Pedro Nolasco, brother of Manuel Críspulo. Mauricio González-Gordon y Díez obtained the title on 10 November 1980, after the death of his father, Manuel María.[3]
The heir apparent is the last holder's daughter Bibiana María González-Gordon. The title has not been claimed since the death of Mauricio González-Gordon y Díez.