Both his wife and daughter died that year and Peyton subsequently brought his son John to Newfoundland to join him as a partner in business.
In 1819, he took part in an expedition led by his son John Peyton Jr., which ended with the capture of a Beothuk woman named Demasduit[4] and the killing of her husband Nonosabasut, who was attempting to negotiate her release.
"[1][6] Peyton Sr. was accused of violence against the Beothuks in retaliation for the theft of supplies from his fishing stations.
[1] The most infamous violent raid against the Beothuk was led by Peyton along with two others in winter 1789, where they fired upon a band of 50 Beothuk with buckshot, killing many while injuring all others, beyond some injured individuals who were physically beaten to death after being shot, any others were left to die from their injuries or freeze to death.
[7] John Bland, the magistrate at Bonavista, recommended that he be expelled from the Bay of Exploits.