Roderick Grant Francis Blunt-Mackenzie, 4th Earl of Cromartie, (24 October 1904 – 13 December 1989) was a Scottish soldier and peer. In 1979, he was recognised as the chief of Clan Mackenzie.
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Ancestry and early life
Blunt-Mackenzie was born on 24 October 1904 and was baptised on 2 December 1904 at Adderbury Church, Oxfordshire. Styled Viscount Tarbat from birth, he was the eldest son of Lady Sibell Lilian Mackenzie, suo jure Countess of Cromartie and Lt.-Col. Edward Walter Blunt DL. His younger brother was the Hon. Walter Osra Blunt-Mackenzie, who served in the Royal Naval Reserve during World War II. He also had two sisters, Lady Janet Frances Isobel Blunt-Mackenzie (who died in infancy), and Lady Isobel Blunt-Mackenzie, the wife of Capt. Oscar Linda of Assynt House.
His grandfather, Francis Mackenzie, 2nd Earl of Cromartie, was the second son of George Sutherland-Leveson-Gower, 3rd Duke of Sutherland and Anne Hay-Mackenzie, 1st Countess of Cromartie (the great-great-granddaughter of George Mackenzie, 3rd Earl of Cromartie who took part in the Jacobite rising of 1745 and was attainted in 1746). His aunt, Lady Constance Mackenzie, was the wife of Sir Edward Stewart-Richardson, 15th Baronet, and was known for her semi-clad dancing for the "shilling seats" of theatres in 1910 which incurred the displeasure of Edward VII, who considered it unsuitable behaviour for a noblewoman, leading her to be barred from Court. His father was the eldest son of Maj.-Gen. Charles Harris Blunt of Adderbury Manor (the grandson of Walter Blunt, a younger son of Sir Henry Blunt, 2nd Baronet) and the former Mary Augusta Tod (a daughter of Col. James Tod, an officer of the British East India Company).


