As an afterthought the kinds of architecture and sculpture used in the cathedrals of Reims and Chartres between 1200-1400 more or less, are called the chartrain style. It is possible that Pont Chartrain was a bridge built following the influence of that style. It is also a widespread French family name and at least one renowned fur-trader (Louis) bore it. The county of France where Chartres is is called Chartrain, and I imagine the Cathedral was raised under the sponsorship of the Count de Chatrain. But I don't know anything earlier than that.



A