Peerage Holding
William Petty
of Lansdowne (Marquessate)
Starting on: Mon 6th Dec 1784
Ending on: Tue 7th May 1805
Ordinality: 1
William Petty
of Lansdowne (Marquessate)
Starting on: Mon 6th Dec 1784
Ending on: Tue 7th May 1805
Ordinality: 1