Modesto Borreguero (1893 to 1969) was a Spanish guitar maker who started as an apprentice with Manuel Ramirez at the age of 12. He worked alongside Santos Hernandez and Domingo Esteso, Ramirez died in 1916, but Borrequero, Hernandez and Esteso stayed at the request of Ramirez's widow and continued to operate the workshop in Calle Arlaban. After a few years, Hernandez and Esteso left to start their own workshops, but Borreguero stayed working for Manuel Ramirez’s widow until the workshop closed in 1923. At this point Borreguero married and opened his own workshop in 5, Duque de Fernan Nuñez  - although he still marked his labels "Antiguo oficial de M. Ramirez" to advertise his association with the master.

During the civil war Modesto lost both his wife and his workshop, but he struggled on, raising 2 children while moving between various workshops. By the end of the second world war in 1945 his career was finally enjoying some stability and he opened a new workshop on Zurita 27, where he worked until 1948. His reputation grew and in 1948 he was able to rent rooms in the workshop of Hernandez and Aguado, who were still furniture restorers at the time. Hernandez and Aguado were inspired by Borreguero to begin building guitars themselves. In 1952 Borreguero moved his workshop to Desengaño No. 4 and began to build exclusively for the music shop Casa Garrido. There he also took over the training of Vicente Perez Camacho and also taught the young Felix Manzanero before his apprenticeship with Jose Ramirez III.

Source: Vintage Guitar World - Modesto Borreguero (13 September 2023)