Arostegui Garamendi, Matias 23.feb.1853-31.jan.1886 Spain Biscay, Occhandiano - Madrid, El Escorial
organist, pianist, priest, studied organ, piano and solfege with his father, 1862 organist in Algorta, teacher at Convento de agostinos de Santa Maria de la Vid, 1885 director of music at El Escoral monastery ; brother of Marcelino and Manuel