Charbonneau was around 26 years old when he married Sacagawea. Their union took place in February 1805, though the exact date is not well-documented. Sacagawea, a Shoshone woman, was only about 15 years old at the time of their marriage.
This age difference was not uncommon during that period, as many marriages occurred at younger ages than what is typically considered acceptable today. Charbonneau and Sacagawea’s marriage significantly impacted the Lewis and Clark expedition, as Sacagawea served as a guide and interpreter, helping the expedition navigate through the territory.