Actor who set off to explore the southern section of the newly-purchased Louisiana territories as the leader of the Pike expedition,
He served in the army, in his father's company.
Pikes Peak in Colorado was named after him, its first American discoverer.
He was married to Clarissa Harlow Brown. His father was the founder of Woodbridge, New Jersey.
His expedition took place around the same time as the one by Meriwether Lewis and William Clark.