William was a member of a prominent and prolific Great Yarmouth family, counting Thomas atte Fenne* and his son Hugh* among his relatives, but his place in the family tree is unknown. A Yarmouth borough court roll supplies the earliest definite reference to him, showing that he brought a trespass suit there in May 1416.
In 1422 atte Fenne became bailiff of Great Yarmouth, the only major office he held within the borough.
The Yarmouth court rolls and other records show that atte Fenne was a merchant, and one of some consequence. He had dealings with London, for a merchant from the City sued him at Yarmouth for debt in 1433, a case afterwards settled out of court. Among the commodities in which atte Fenne traded was grain. In the accounting year 1437-8, he shipped out 50 quarters of malt and 56 quarters of barley from Yarmouth in the vessel of Derik Gerardsone. Gerardsone was perhaps a ship’s master from the Low Countries, since atte Fenne acquired a royal licence to export barley to that part of the continent in April 1438.
In November 1438, atte Fenne gave a like security to Gregory Draper* of Norwich, although for the much more substantial sum of £34 10s. 6d. He had spent some time in Yarmouth’s gaol a little beforehand, but whether this had any connexion with an action brought by Draper is impossible to say.
According to the antiquary, Francis Blomefield, atte Fenne made his no longer extant will in 1439 but he was still alive in August 1452, when the borough court ordered him to appear before it in connexion with the recognizance he had given to Gregory Draper nearly 14 years earlier.
