Pierre-Esprit Radisson (1636–1710) was a French fur trader and explorer.
In 1659 he was taken on an unlicenced fur-trading expedition to Lakes Superior and Michigan by his sister's husband,
jean baptiste groseilles. They sailed along the coast from the Rupert river to the Nelson river both in Hudson Bay in 1669.



http://en.wikipedia.org/wiki/Pierre-Esprit_Radisson