The Wedderburn baronetcy of Blackness in County Forfar was created in the Baronetage of Nova Scotia in 1704, for John Wedderburn.
On 9 August 1704 he was created a baronet, of Balindean in the County of Perth, in the Baronetage of Nova Scotia, with special remainder to his heirs male whatsoever.
[1] Sir John Wedderburn, 5th Baronet of Blackness was a Jacobite supporter of the 1745 rebellion, and the baronetcy was forfeited in 1746, on his execution for high treason.
[1] After the forfeiture, the title was assumed by the self-proclaimed baronets Sir John Wedderburn, 6th Baronet (1729–1803) and Sir David Wedderburn, 7th Baronet (1775–1858).
The latter was created a baronet, of Balindean, in 1803; at which point, according to Cokayne, the original baronetcy could be considered extinct.