Churchill, the Bounty corporal, was a very large, burly, bullying man, about 5'10" tall, with a fair complexion.  His short light-brown hair was bald at the top.  He was heavily tattooed in
several places of his body, legs and arms.  His hands were severely scarred from scalding.

One of those who deserted the Bounty on 5 Jan 1789, only to be recaptured on 22 Jan 1789.

He received 12 lashes, half as many as his two co-conspirators, to some degree due to the fact that he was normally the person who administered punishment on board, a thankless job that required the continuing respect of the crew if violence against him was to be avoided.

He took an active part in the mutiny, and was among the party the confronted Bligh in his cabin.  Afterwards, he was placed in charge of the arms chest, upon which he made his bed.

He favored settling on Tahiti after the mutiny, where he was prepared to settle down with one of the Tahitian women. 

He moved in with Skinner and his wife, who were living with Skinner's father-in-law at Matavai. 

A few months later, Churchill, Thompson, and another Tahitian refugee, John Brown of the 'Mercury', settled down in their own place.

Churchill's relationship with the Tahitians was unusual.  He was, by strength if not by
acclamation, the principal leader of the mutineers on Tahiti, and as such, automatically merited the respect of the Tahitian community. 

Churchill struck up a close friendship with Natapua, a young fellow and heir apparent in the upper district of Taiarapu. 

Natapua became principal chief in 1789 upon the death of his elder brother, but he himself died the following year without issue, and Churchill, his "teio", succeeded to the office, becoming the first white chief on the island.  He also inherited his friend's estates.

The story of his death is disputed among various authors.  It appears to have be the final result of a number of factors. 

Thompson had gotten into some serious difficulty with an important Tahitian family, and had killed two people and injured another with a musket. 

When confronted by Churchill, apparently a violent argument broke out between the two men revolving around an earlier incident where Churchill had arranged the theft of all the muskets on Tahiti.  Thompson turned the musket on Churchill, killing him instantly.