The Albanian settlements in southern Italy and Sicily were founded in 1444, 1464 and 1468; minor immigrations followed in the three succeeding centuries.
However adequate these identifications may seem, the persistence of an independent clan or tribe of Cherethites-Cretans to the close of the 7th century would imply an unbroken chain of nearly six hundred years, unless, as is inherently more probable, later immigrations had occurred within the interval.
The large number of Slavonic local names in Albania, even in districts where no trace of a Slavonic population exists, bears witness to the extensive Servian and Bulgarian immigrations in the early middle ages, but the original inhabitants gradually ousted or assimilated the invaders.
It must not be denied that the recollection of some invasion may have been greatly idealized by late writers, but it happens that there were important immigrations and internal movements in the 8th-6th centuries, that is to say, immediately preceding the post-exilic age, when this composite account in the Pentateuch and Joshua reached its present form.
There had indeed been previous immigrations, but the passage from the desert into the midst of Palestinian culture led to the adoption of the old semi-heathenism of the land, a declension, and a descent from the relative simplicity of tribal life.