On 30 Sep 1711 John Johnstone 1st Baronet died without male issue. His brother William Johnstone 2nd Baronet (age 48) succeeded 2nd Baronet Johnstone of Westerhall in Dumfries.

On 08 Oct 1727 William Johnstone 2nd Baronet (age 64) died. His son James Johnstone 3rd Baronet (age 30) succeeded 3rd Baronet Johnstone of Westerhall in Dumfries.

On 10 Dec 1772 James Johnstone 3rd Baronet (age 75) died. His son James Johnstone 4th Baronet (age 46) succeeded 4th Baronet Johnstone of Westerhall in Dumfries.

On 03 Sep 1794 James Johnstone 4th Baronet (age 68) died. His brother William Johnstone aka Pulteney 5th Baronet (age 64) succeeded 5th Baronet Johnstone of Westerhall in Dumfries. Frances Pulteney (age 79) by marriage Lady Johnstone of Westerhall in Dumfries.

On 30 May 1805 William Johnstone aka Pulteney 5th Baronet (age 75) died intestate in Bath House. His nephew John Lowther Johnstone 6th Baronet succeeded 6th Baronet Johnstone of Westerhall in Dumfries.

John Lowther Johnstone 6th Baronet died. His son Frederick Johnstone 7th Baronet succeeded 7th Baronet Johnstone of Westerhall in Dumfries.

Frederick Johnstone 7th Baronet died from a fall from a horse. His son Frederick Johnstone 8th Baronet succeeded 7th Baronet Johnstone of Westerhall in Dumfries.