Manuel Alonso Pérez de Guzmán el Bueno (7 Jan 1579—20 Mar 1636), Spanish nobleman belonging to the house of Medina Sidonia, son of Alonso Pérez de Guzmán el Bueno, VII Duke of Medina Sidonia and Ana de Silva y Mendoza, daughter of the princes of Eboli and dukes of Pastrana. Manuel Alonso was XIII señor de Sanlúcar, XI conde de Niebla, VIII duque de Medina Sidonia, VI marqués de Cazaza in Africa. His father purchased a guitar for him from violero Juan Márquez in 1594. More biographical details at https://es.wikipedia.org/wiki/Manuel_de_Guzmán_y_Silva