Whitbourne amassed evidence from 170 masters of English fishing vessels but, judging from later controversies between the colonists and the fishing merchants, his action was no more effective than Guys; indeed, it is difficult to see what one man could have been expected to accomplish.
In 1625 Whitbourne was knighted by Falkland but, by November 1626, he was looking for fresh employment.
Whitbournes books are: A discourse and discovery of New-found-land (London, 1620), of which there is a ms draft in Whitbournes own hand in the BM, Add.