The sixth Baronet married Catherine, sister and heiress of Sir Alexander Ramsay-Irvine, 6th and last Baronet, of Balmain (see Ramsay Baronets). Their second son Alexander Burnett succeeded to the Ramsay estates on his uncle's death in 1806 and assumed the surname of Ramsay in lieu of his patronymic. The same year the baronetcy of Balmain was revived in his favour. His descendant Sir Alexander William Burnett Ramsay, 7th Baronet, is presumed to be the heir to the Burnett Baronetcy of Leys.
The Burnett Baronetcy, of Selborne House in the County Borough of Croydon,[1] was created in the Baronetage of the United Kingdom on 17 October 1913 for Sir David Burnett, Lord Mayor of London between 1912 and 1913. As of 2010 the title is held by his great-grandson, the fourth Baronet, who succeeded his father in 2002.
Sir Alexander Edwin Burnett, 14th Baronet (1881–1959) died unmarried.
The 13th Baronet's two sons, Alexander and Roger, both died as young men, so the estate passed through his daughter Elizabeth to her son James Cecil, who was obliged to change his surname to Burnett in order to succeed to the estate. However, the title of Baronet passes only through the male line, as long as a male line exists, so the heir to the Baronetcy of Burnett of Leys is Alexander William Burnett Ramsay, 7th Baronet, of Balmain (Ramsay Baronets), whose family line succeeded to the Ramsay estates and changed of surname by royal licence.[2] Alexander William Burnett Ramsay lives in Australia.