Wikipedia
Ross-shire was a county constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 to 1832. In 1832 it was merged with Cromartyshire to form Ross and Cromarty.
Ross-shire is a historic county in the Scottish Highlands. The county borders Sutherland, Cromartyshire (of which it contains many exclaves), Inverness-shire and an exclave of Nairnshire. It includes most of Ross as well as Lewis in the Outer Hebrides. Dingwall is the traditional county town.
Under the Local Government (Scotland) Act 1889 Ross-shire was combined with Cromartyshire to form the single local government county of Ross and Cromarty, which continued until 1975. Ross and Cromarty was also known as Ross-shire, which was the name of the postal county which covered the mainland part of the local government county, and remained the postal county until 1996.
In 1975, Ross and Cromarty was itself replaced by the Highland region and the Western Isles, under the Local Government (Scotland) Act 1973. The region became a unitary council area in 1996, under the Local Government etc. (Scotland) Act 1994.
Before the Acts of Union 1707, the barons of the shire of Ross elected commissioners to represent them in the unicameral Parliament of Scotland and in the Convention of the Estates.
From 1708 Ross-shire was represented by one Member of Parliament in the House of Commons of Great Britain.