Sir Bryce Blair, of Blair, afterwards knighted by Charles I., married in 1618 Marian, daughter of Walter Dundas, of Dundas. His son John, died without issue, and was succeded by his uncle John Blair, who married Lady Jean Cunningham, daughter of William Cunningham, eighth Earl of Glencairn, and dying in 1662, was succeeded by his son, William Blair, of Blair.