The date on the inscription is given according to the Spanish Era which began in 38 BC.
The text of the epitaph includes a passage that is a quote from Carmen 26 of Eugenius of Toledo (the epitaph for the queen Recciberga): (Hinc ego te, couniux, quia vincere fata nequivi / funere perfunctam sanctis commendo tunedam, / ut cum flamma vorax veniet comburere terras, / coetibus ipsorum merito sociata resurgas.) See Velázquez 2001: 340-346; Farmhouse Alberto 2010: 99.