The title Earl of Kinghorne was created in the Peerage of Scotland 1606 for Patrick Lyon. In 1677, the designation of the earldom changed to "Strathmore and Kinghorne". A second Earldom was bestowed on the fourteenth Earl in the Peerage of the United Kingdom in 1937, the title being Strathmore and Kinghorne.
Aside from the Earldoms, the Earl holds the subsidiary titles: Viscount Lyon (created 1677), Lord Glamis, Tannadyce, Sidlaw and Strathditchie (1677) and Baron Bowes (1887). The first two are in the Peerage of Scotland; the last is in the Peerage of the UK. The eldest son of the Earl uses as Lord Glamis as a courtesy title. Normally, the highest subsidiary title (in this case Viscount Lyon) would be used, but the same is not done so as not to cause confusion with the Lord Lyon.
A second Earldom was bestowed on the fourteenth Earl in the Peerage of the United Kingdom in 1937, the title being Strathmore and Kinghorne.
Elizabeth Bowes-Lyon (1900 - 2002), the Queen consort of King George VI from 1936 until 1952, was the daughter of the 14th Earl of Strathmore and Kinghorne.
Patrick Lyon, 3rd Earl of Strathmore and Kinghorne (1643-1695)
The fourth Earl had seven sons, of whom four succeeded to the Peerage, and the ninth earl married the heiress of George Bowes, of Streatlam Castle, the family thereafter assuming the surname of Bowes.
No account of Lord Strathmore would be complete which did not do justice to his gifts as a host and his capacity for putting at their ease the large company of his sons' friends who, before the war, went to Glamis for the shooting each autumn.
Lord Strathmore and Lady Strathmore (who died in 1938) had 10 children, six sons and four daughters, of whom three sons and three daughters survive their father, the youngest daughter being the Queen.