Violero from Valencia active between 1505 and 1522. He is considered likely to have been the maker of the vihuela marked “Guadalupe” conserved in the Musée Jacquemart-André in Paris (16-124), although it is possible that it could have been made by his son Juan de Guadalupe. Martínez proposes Alonso more likely to have been the maker (Martinez 2015) as he has shown the surviving instrument to have been made using the Valencian system of measurement. At that time, however, it had not been established that Juan de Guadalupe was Alonso’s son, and that he too had been active in Valencia before fleeing to Toledo (Sanchis 2023).
Documents show Alonso to have been active in Valencia from 1505. Due to his involvement in the social revolt of the Germanies in Valencia he was tied and on 15 March 1522, all his property together with that of his wife was confiscated. Martínez suggests that the absence of tools in the inventory of their belongings (preserved in the General Archive of Valencia, Real Chancellery) may indicate that his workshop was not in his home, although Sanchis has cast doubt on this (Sanchis2023). The inventory includes some instruments, however, nine vihuelas, a harp, a guitar and a lute, but without valuations.
A vihuela by Alonso is in the inventory of the possessions of the Duke of Cenete, and Sanchis postulates that the description of this instrument suggests that it may be the vihuela preserved in Paris (Sanchis 2023).
Martínez suggests that Alonso may be the unnamed violero killed and quartered in Teruel in August 1522 as a result of his participation in the Valencian uprising.