He was a younger son of the
1st Marquess of Argyll by his wife, the former Lady Margaret Douglas, daughter of the
7th Earl of Morton. His brother was
Archibald Campbell, 9th Earl of Argyll, who was executed in 1685 for his participation in the
Monmouth Rebellion. Campbell himself was exiled from
Scotland. On 28 January 1668, he married Lady Vere Kerr, third daughter of the
1st Earl of Lothian, and by her was the father of five children: Charles,
Archibald (later
Bishop of Aberdeen), Mary, Anna and Jean. Lady Vere died in 1674. In 1685 he married Susan Menzies, daughter of Sir Alexander Menzies of Weem and had four more children: Neil, Alexander, Christian and Susan. Lord Neill Campbell was brought before the
Privy Council of Scotland on 1 August 1684; he was, upon posting £5,000 bond, required to remain within six miles of
Edinburgh, and to appear before the Council upon six hours notice. His brother, the Earl of Argyll, was captured at
Inchinnan on 18 June 1685, and on 30 June 1685 Argyll was executed, like his father, on the
maiden in Edinburgh. Sentiments turned against the Campbell family to the point that a movement arose to present a bill in Parliament to abolish the family name altogether. On 24 June 1685, King
James II and VII issued a proclamation against traitors and fugitives in which Neil Campbell's son Archibald, among others, were named with a price of 1,800
Scottish merks offered for their capture. It was shortly after these events that Lord Neill Campbell prepared to voyage to America. On 13 August 1685, Campbell purchased of
Viscount Tarbat one quarter of one twenty-fourth share in East New Jersey; that same day he was given
power of attorney by
Sir John Dalrymple to act as Dalrymple's agent in America. On 24 August, he was given power of attorney by Robert Blackwood, an Edinburgh merchant. In the fall of 1685, Lord Neill Campbell and 53 others, including his son Archibald, arrived in
Perth Amboy, the capital of East Jersey. ==Political career==