[2] Latassa was born (and died) in Zaragoza of an Aragonese noble family which had fallen onto hard times.
[2] His parents, Juan Latassa y Ortiz (of Navarre) and Maria Ortin moved to Zaragoza after their marriage in the early eighteenth century.
Latassa began studying Arts and Philosophy at the University of Zaragoza in 1749 and gained his bachelor's degree in 1752.
During his life Latassa was employed as a curate at the parish of Juslibol and later as a racionero in the metropolitan church of El Salvador (1780) and later to a sinecure at the Basilica del Pilar in 1782.
[3] He died aged 67 considering his life's work as incomplete, and was interred in the Basilica del Pilar, in the chapel of Saint Vincent.