Enrique Pérez de Guzmán, 2nd Count of Niebla
Enrique Pérez de Guzmán y de Castilla, 2nd Count of Niebla (in full, Spanish: Enrique Pérez de Guzmán y de Castilla, segundo conde de Niebla, señor de Sanlúcar de Barrameda) (20 February 1391 – 31 August 1436) was a Spanish nobleman and military figure of the Reconquista. He drowned while attempting the Seventh Siege of Gibraltar.