42nd Regiment of Foot

Also known as The Black Watch.

Chronology

1725 four Independent Highland Companies raised to police Highlands, commonly called the Reicudan Dhu, or Black Watch
1729 two additional companies raised
1739 Earl of Craufurd's Regiment formed by regimentation of existing six coys and four new coys; also known until 1751 by the names of other colonels
1751 became 42nd (Highland) Regiment of Foot
1758 became 42nd (Royal Highland) Regiment of Foot
1861 became 42nd (Royal Highland) Regiment of Foot, The Black Watch
1881 amalgamated with the 73rd Regiment of Foot to become the 1st Battalion, Royal Highland Regiment (The Black Watch)
2006 merged with five other Scottish regiments - the Royal Scots, the King's Own Scottish Borderers, the Royal Highland Fusiliers, The Highlanders and the Argyll and Sutherland Highlanders - to form the Royal Regiment of Scotland

History of the Scottish Highlands : Highland clans and Highland regiments Volume 2 "The 42nd Royal Highland Regiment “The Black Watch” " by John S Keltie (c.1886) Archive.org. Indian service commences page 419 in 1857.

42nd Regiment of Foot Wikipedia
Black Watch Wikipedia
Black Watch Black Watch (Royal Highland Regiment) website
List of Inscriptions on Christian Tombs and Tablets of Historical Interest in the United Provinces Limited preview google books. Pages 100-103 details memorials to the 42nd Royal Highlanders who fell in the Mutiny campaigns 1857-1860. Also gives some background about the regiment
Private John Ellison in India 1860-1868 from RichardMoles.com
The Black Watch (Royal Highland Regiment) from British Armed Forces & National Service. Includes deployment of both the 1st and 2nd Battalions in India.
The Black Watch (Royal Highland Regiment) Regiments.org (archived site)
The 1st Battalion Black Watch in India 1919-1936, Annual Manoeuvres 1933, Barrackpore 1934 from the Black Watch Archive, a memorial to John Davidson, a Black Watch Soldier. Includes many photographs.