Other Events:

• Office: From 1741 to 1744; Member of Parliament (M.P.) for Athy
• Hereditary Title: 20 Feb. 1743/44; Earl of Kildare
• Office: 19 March 1744/45; Privy Councillor (P.C.) (Ireland)
• Hereditary Title: 21 Feb. 1746/47; 1st Viscount Leinster of Taplow, co. Buckingham [G.B., 1747]
• Office: From 1756 to 1757; One of the Lords Justices Vice-Regents [I.]
• Office: From 1758 to 1766; Master General of the Ordnance [I.]
• Military Service: From 1760 to 1766; Colonel, Royal Irish Artillery
• Military Service: From 1761 to 1770; Major-General
• Office: 1761; Governor of County Kildare
• Hereditary Title: 3 March 1761; 1st Earl of Offaly [I., 1761]
• Hereditary Title: 3 March 1761; 1st Marquess of Kildare [I., 1761]
• Hereditary Title: 26 Nov. 1766; 1st Duke of Leinster [I., 1766]
• Military Service: 1770; Lieutenant-General
• Probate: 1773

Notes:

Office:
He was under age at this time.

Office:
Sworn 22 May 1746.

In 1770 he was removed from the Privy Council at his own request.

Probate:
Prerogative Court for Ireland

James married Lady Emilia Mary Lennox on 7 Feb. 1746/47 in Whitehall Place, St. Margaret's, Westminster, Middlesex, England. Emilia (daughter of General Charles (Lennox), 2nd Duke of Richmond and Lady Sarah Cadogan) was born on 6 Oct. 1731; was christened in in St. George's, Hanover Square, London, Middlesex, England; died on 27 March 1814 in Grosvenor Square, London, Middlesex, England; was buried in Chichester Cathedral, Chichester, Sussex, England. [Group Sheet] [Family Chart]