He was s of Lt Michael George Ralph NEVILL 1917-ka1943 (gt gs of 4th Earl of ABERGAVENNY 1792-1868 who was f of 1st Marquess of ABERGAVENNY 1826-1915) and Maureen Ethné David 1920-2002 d of Maj Arthur Tahu Gravenor RHODES 1893-1947 and Hon Helen Cecil Olive PLUNKET 1895-1968 d of 5th Baron PLUNKET 1864-1920 and Lady Victoria Alexandrina HAMILTON-TEMPLE-BLACKWOOD 1873-1968 d of 1st Marquess of DUFFERIN & AVA 1826-1902. He m 1972 Katherine Mary d of Rossmore David WESTENRA of Christchurch, NZ (?scion of the ROSSMORE barons), and had a son and two daus as above.
His son GUY MICHAEL ROSSMORE Nevill b 12 Nov 1973 succeeds him as presumptive heir to his cousin the 6th & final Marquess of ABERGAVENNY b 1955 who is married with a dau. Should Guy survive the demise of the last Marquess, Guy will become 11th Earl of ABERGAVENNY & Viscount Nevill cr 1784 as well Baron [A]BERGAVENNY. Guy is married in 2008 and has three sons born between 2010 and 2015.Debretts lists the 6th Marquess of Abergavenny as
the 24th holder of the barony.
The last print edition of Burke’s Peerage & Baronetage includes
the following historical note:
…The Barony created in 1450 [ie by the summons of Sir Edward Nevill to parliament] would by subsequent doctrine have been regarded as heritable by an heir general, such as a sole heiress. But this doctrine did not become a hard and fast rule till the late 17th century. So after Feb 1586/7, when the 4th Baron Bergavenny left a sole heiress, Mary Nevill(e), she did not inherit. Instead, following considerable vacillation by the House of Lords, the Crown decided that the heir male was entitled to inherit, not the heir general. It might seem as if the Crown did this because the Barony was thought to be one by tenure, and indeed the heir male Edward Nevill(e) already held the castle and demesne lands of Abergavenny. Moreover the precedence (ie, notional date of first summons to Parliament) assigned the Barony of Bergavenny on 25 May 1604 was 1295, when the first Baron Bergavenny, whether by tenure or not, was summoned to Parliament. Meanwhile the Crown terminated the Barony of Despenser in favour of Mary Nevill(e) as compensation for its refusal to recognise her as heir to her father’s Barony of Bergavenny. The effect on the Barony of Bergavenny was to make it heritable by heirs male only thereafter…