The Sheriff of Ross, Cromarty and Sutherland was historically responsible for enforcing law and order in Ross-shire, Cromartyshire and Sutherland in Scotland.
The area was part of the shire of Inverness from the 12th century. A Sheriff of Cromarty existed from the mid-13th century, initially with a relatively small jurisdiction around the town of Cromarty, subsequently enlarged in the late 17th century to include various other tracts of land scattered across the province of Ross. There are a couple of references to a Sheriff of Ross in the 15th century, but the position was not permanently established until 1662, after an act of parliament of 1661 separated Ross-shire from Inverness-shire.
The two counties shared a sheriff from 1748, known as the Sheriff of Ross and Cromarty. From 1870 the sheriff was also shared with the neighbouring county of Sutherland, becoming the Sheriff of Ross, Cromarty and Sutherland. Following a further reorganisation in 1946 it became the Sheriff of Inverness, Moray, Nairn &amp; Ross &amp; Cromarty.
Sheriffs of Cromarty.
The position of the sheriff of Cromarty was a heritable position. 
Sheriffs of Ross.
"Position re-established 1662"
References.
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