House of Wyndham
- Coat of Arms
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House of Wyndham
Lords of Wymondham
Lords and Baronets of Orchard Wyndham
Barons Cockermouth
Earls of Egremont
- Cadet Branches
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House Wyndham of Kentsford
Lords of Kentsford
Baronets of Trent
Issued from Edmund, younger son of John Wyndham, Lord of Orchard Wyndham -
House Wyndham of Leconfield
Lords of Leconfield
Barons Leconfield and Egremont
Issued from George, illegitimate son of George Wyndham, 3rd Earl of Egremont -
House of Knatchbull-Wyndham
Baronets of Mersham
Matrilineal branch issued from Alice Wyndham, daughter of John Wyndham and sister of Thomas Wyndham, 1st Baron Wyndham -
House of Wyndham Ashworth
Lords of Beggearn Huish
Matrilineal branch issued from Alice Wyndham, daughter of Florance Wyndham, a direct descendant of John Wyndham, Lord of Orchard Wyndham
- Cadet Branches
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Percy Wyndham-O'Brien
1st Baron Ibracken
1st Earl of Thomond
2nd son of William Wyndham, 3rd Baronet of Orchard Wnydham and younger brother of Charles Wyndham, 2nd Earl of Egremont
Assumed additional surname and arms of House of O'Brien as successor to Henry O'Brien, 8th Earl of Thomond