Both Pierre Charron and Catherine Pillard came from France to Québec alone, that is without their family.
Catherine was a "fille du roi" (King's daughter"). Hence, she surely arrived with one of the groups of women sent by the king of France (then Louis XIV) to help the development of the colony. She is in Montréal in May 1664. Likely, she arrived in September 1663. Name of vessel and date not known.
As for Pierre Charron, he signed a contract in Montréal on October 2, 1662. It seems that he arrived that same year. Name of vessel and date not known.
You will be interested to know that Pierre Charron was born on October 21, 1635, and christened on October 28 as a protestant in Nanteuil-les-Meaux (France). Catherine Pillard was born in 1646 and christened on March 30 in Ste-Marguerite church of La Rochelle.
Lastly, Pierre Charron was not known as "Ducharme", even if this information has been given by many genealogists, Like René Jetté himself.