Up till 1968, modern scholarly references to Peter Caxaro had been few. The first known to have referred to him was the Dominican Paul Galea in his history of the Dominicans at Rabat, Malta, published in 1949. Further data was produced by Michael Fsadni O.P. in 1965, also attempting his hand at a similar history. Both friars based their information on a common source; namely, on the "Descrittione delli Tre Conventi che l’Ordine dei Predicatori tiene nell’Isola di Malta", I, 1, by Francesco Maria Azzopardo O.P., written about 1676.