1st Earl Alexander of Tunis

JAMES, 4th Earl of Caledon (1846-98), KP, DL, of Caledon Castle, County Tyrone, wedded, in 1884, the Lady Elizabeth Graham-Toler, daughter of Hector, 3rd Earl of Norbury, and had issue,

Eric James Desmond, his successor;
Herbrand Charles, father of the 6th Earl;
HAROLD RUPERT LEOFRIC GEORGE, of whom we treat;
William Sigismund Patrick.

The third son,

THE HON HAROLD RUPERT LEOFRIC GEORGE ALEXANDER (1891-1969), FIELD-MARSHAL THE RT HON THE EARL ALEXANDER OF TUNIS, KG, GCB, OM, GCMG, CSI, DSO, MC, TD, PC

• Brigade Commander in India, 1934
• ADC to His Majesty, 1936-7
• Major-General, 1937
• General, 1942
• Field-Marshal, 1944
• Governor-General and Commander-in-Chief, Canada, 1946-52
• Colonel, Irish Guards, 1947
• Governor of Harrow School, 1952

Field-Marshal Alexander was elevated to the peerage, in 1946, in the dignity of Viscount Alexander of Tunis, of Errigal, County Donegal.

Lord Alexander was created, in 1952, Baron Rideau, of Ottawa, and of Castle Derg, County Tyrone, and EARL ALEXANDER OF TUNIS.

He married, in 1931, the Lady Margaret Diana Bingham, daughter of George Charles, 5th Earl of Lucan, and had issue,

SHANE WILLIAM DESMOND, Lord Rideau, his successor;

Brian James;

Rose Maureen; Susan Mary (adopted).

His lordship was succeeded by his eldest son,

SHANE WILLIAM DESMOND (1935-), 2nd Earl, who wedded firstly, in 1971, Hilary, daughter of John van Geest; and secondly (following a divorce), in 1981, Davina Mary, daughter of James, 4th Baron Terrington, by which lady he has issue,

Rose Margaret; Lucy Caroline.

The heir presumptive to titles is the 2nd Earl's younger brother, the Hon Brian James Alexander CMG (born 1939).

Former residences ~ 12 Wilton Street, London; Caledon, County Tyrone; The Vale, Windsor Forest, Berkshire.