Complex sentence: Because of the nature of Irish society and landholding patterns it is likely that any paternal lineages have gone extinct, and it eventually reached a point where even the finest behaved foreign families were easily dispossessed of what little they had remaining.
Split into simpler sentences: Because of the nature of Irish society and landholding patterns it is likely that any paternal lineages have gone extinct. It eventually reached a point where even the finest behaved foreign families were easily dispossessed of what little they had remaining.