Prebble1 wrote that Peter Ross was arrested for being the ring leader but notes that Donald Ross never mentioned him in the events of 31st March 1854, but suggests Peter was involved in the deforcement of Sheriff Officer McPherson on Tuesday 7 March 1854 and was also involved in what became known as the "Gauger affair" on 22 March 1854

Sheriff McPherson testified in September before the Court of Justiciary against Ann Ross and Peter Ross

They were charged with various offences for the events of 7th, 22nd and 31st March, but after advice from their legal counsel plead guilty to breach of the peace on 14th September 1854 at the High Court Inverness. Anne was jailed for 12 months and Peter for 18 months with hard labour. Peter had his sentence reduced by 6 months with the aid of Rev Gustavus Aird (Minister at Creich) and  Mr Gray of the Free West Church.

This letter mentions Peter's father John Ross and brother Donald and sister Hellen. The court documents mentioned Peter was 21 in September 1854.

With this information, Peter may have been born on 25 November 1832. Here's my guess at Peter and his family

If this is correct Peter was living with his sister Catherine and brother John at Wester Greenyards in 1891, and X in 1901. The three siblings were single and John the youngest, was a farmer and the head of the household. Peter died 11 September 1917 aged 84. His death was registered by his brother John

1John Prebble 1963

CountryCode GB
RepCode 234
Repository National Archives of Scotland
RefNo AD14/54/192
Title Precognition against Peter Ross, Ann Ross for the crime of mobbing and rioting, breach of the peace, and assault on officers of the Law
Date 1854
Accused Peter Ross, alias Bain, son of John Ross, Age: 21, Address: Residing with father, Greenyards, Kincardine, Ross County
Accused Ann Ross, alias Taylor, Age: 35, Address: Easter Greenyard, Kincardine, Ross County
AccessStatus Open
RelatedRecord JC26/1854/76
FindingAids 19th Century Solemn Database