Baron Brabourne
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Baron Brabourne is a title in the Peerage of the United Kingdom. It was created in 1880 for Edward Hugessen Knatchbull-Hugessen the second son of the Rt. Hon. Sir Edward Knatchbull, 9th Bt (1641). The 4th baron inherited the baronetcy in 1917 since when the titles have remained merged. The Peerage of the United Kingdom comprises most peerages created in the United Kingdom of Great Britain and Ireland after the Act of Union in 1801. ... The Right Honourable (abbreviated The Rt Hon. ... BT may stand for: British Telecommunications - now officially BT Group plc; the former state telecommunications company of the United Kingdom B.T. - a Danish tabloid newspaper BitTorrent - an Internet file sharing system Big Time Air Baltic (in the IATA code) Bacillus thuringiensis or Bt toxin, ( Cry proteins) - a family of... A baronet (traditional abbreviation Bart, modern abbreviation Bt) is the holder of a species of knighthood known as a baronetcy. ...

The 7th baron married Patricia Mountbatten, 2nd Countess Mountbatten of Burma whose titles, along with the barony/baronetcy will be inherited by their eldest son on her death. Patricia Edwina Victoria Mountbatten, 2nd Countess Mountbatten of Burma (born February 14, 1924) succeeded her father, the 1st Earl Mountbatten of Burma, when he was assassinated in 1979. ...
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Baronets of Mersham Hatch (1641)
Norton Knatchbull, 1st Baronet (c. 1602–1685)
John Knatchbull, 2nd Baronet (c. 1636–1696)
Thomas Knatchbull, 3rd Baronet (d. 1712)
Edward Knatchbull, 4th Baronet (d. 1730)
Wyndham Knatchbull-Wyndham, 5th Baronet (1699–1749)
Wyndham Knatchbull-Wyndham, 6th Baronet (1737–1763)
Edward Knatchbull, 7th Baronet (1704–1789)
Edward Knatchbull, 8th Baronet (c. 1760–1819)
Edward Knatchbull, 9th Baronet (1781–1849)
Norton Knatchbull, 10th Baronet (1808–1868)
Edward Knatchbull-Hugessen, 11th Baronet (1829-1893), created 1st Baron Brabourne in 1880, see below.
Edward Hugessen Knatchbull-Hugessen, 1st Baron Brabourne (1829-1893)
Edward Knatchbull-Hugessen, 2nd Baron Brabourne (1857-1909)
William Wyndham Wentworth Knatchbull-Hugessen, 3rd Baron Brabourne (1885-1915)
Cecil Marcus Knatchbull-Hugessen, 4th Baron Brabourne (1863-1933)
Michael Herbert Rudolf Knatchbull, 5th Baron Brabourne (1895-1939)
Norton Cecil Michael Knatchbull, 6th Baron Brabourne (1922-1943)
John Ulick Knatchbull, 7th Baron Brabourne (b. 1924)
Lord Brabourne's son and heir: Norton Louis Philip Knatchbull, Lord Romsey (b. 1947) (also heir to the Earldom of Mountbatten of Burma)
Lord Romsey's son and heir: Hon. Nicholas Louis