The Reverend Donald Nicolson of Scorrybreac, head of the clan at the end of the 17th century, is reputed to have had 23 children, through whom he is a common ancestor of many Skye families. Donald's attachment to the Episcopalian faith, and refusal to swear allegiance to William III after 1689 seems to have resulted in his being driven from his parish as a Non-juror - the religious position strongly aligned with Jacobitism - some time after 1696. The MacDonalds of Sleat fought in the Jacobite risings of 1689 and 1715, and it is probable that Nicolsons served within their ranks: an intelligence report gathered for the government in 1745 identified John Nicolson of Scorrybreck as one of Skye's likely rebels, should the MacDonalds again take to the field. In the event, the Sleat MacDonalds avoided action in the 1745 rebellion, but tradition maintains that a band of Nicolsons fought at Culloden in Jacobite service.