 At around 1320 King Frederick II, gave the title of Count of Malta to his son by Eleanor of Anjou, Guglielmo, it seems that in 1330 Guglielmo invested the county of Malta to his half brother Alfonso Federigo.Although no records are known to substantiate the common belief, it is maintained that he held the fief until his death in 1349.At this date the fief was inherited by his son Pietro Federigo.