It is difficult to say with certainty when the Augustinians came to Malta. However, we can say that their presence in Malta takes us back to the second half of the 14thcentury, because this is the period that our historical sources are certain about. In the general archives of the Order we have the first reference to a Maltese Augustinian monk, a certain Fra Frangisk of Malta (+1416) in a general register dated 1386.Other documents found in Palermo show that there was an Augustinian presence in Malta in 1412.

There is evidence to show that the Augustinians took care of the Marian sanctuary of Mellieha. They left this sanctuary probably due to the fear of attacks by corsairs. It is certain however that the Augustinians lost their monastery in Rabat, together with all their possessions, during the Turkish siege of 1429.

https://www.agostinjani.org/en/who-we-are/history-of-the-province.html