Guillaume Boutheroue was a French engineer who completed the Briare Canal, originated by Hugues Cosnier. [1]
In 1623, he was the Poor Rate and Tax Collector at Beaugency. [1]
In 1638, along with his brother-in-law Jacques Guyon, he obtained letters patent from Louis XIII allowing them to complete the Canal de Briare. The canal was completed in 1642. [1] [2]