Complex sentence: Following the failure of this the Nevilles have never quite recaptured their former influence, however they continue on to this day; the current head is Christopher Nevill, 6th Marquess of Abergavenny.
Split into simpler sentences: Following the failure of this the Nevilles have never quite recaptured their former influence. However they continue on to this day; the current head is Christopher Nevill, 6th Marquess of Abergavenny.