Keith baronets of Powburn (1663): a title created for a descendant James or George Keith of William Keith, 2nd Earl Marischal, with seat at lands near Laurencekirk, for a Royalist. It became extinct on his death, perhaps in 1690, with leaving an heir.
See also
Earl of Kintore, where the title of the Baird baronets of Urie is now held with the surname Keith