Background
He was the son of the Honourable Sir John Dalzell and Agnes Nisbet. He married, firstly, Catherine Sandilands, daughter of Sir James Sandilands and Lady Agnes Carnegie.
He was the son of the Honourable Sir John Dalzell and Agnes Nisbet. He married, firstly, Catherine Sandilands, daughter of Sir James Sandilands and Lady Agnes Carnegie.
They had one daughter together. He finally held the office in 1685. He was created a Baronet of Glenae, Dumfries on 11 April 1666, in the Baronetage of Nova Scotia.
Sir Robert held the office of Member of Parliament for the sheriffdom of Dumfries between 1665 and 1674, and again from 1681 to 1682.