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|Family title:||Marquess of Sligo|
|Description:||A junior branch of the Brownes of The Neale, county Mayo, established at Westport by Colonel John Browne (c 1636-1711) at the end of the 17th century. The Colonel’s wife was a great, great granddaughter of the famous pirate queen Grace O’Malley. Their grandson became the 1st Earl of Altamont in 1771 and his grandson was created Marquess of Sligo in 1800. The Brownes have been in continuous occupation at Westport House for more than 300 years.|