My Gwinnett research

As part of my New Year’s resolution to spend more time on my own research, I am starting a session at the Gloucestershire Archives this evening when I can concentrate on my ancestors, the Gwinnetts. They appeared in the Badgeworth area of the county in the second half of the sixteenth century. The earliest reference I have found for them so far is 1575. The document is actually in the manorial records and the entry is dated 1579 but it mentions that George Gwinnett had been there for four years. Does anyone have an earlier date for them?