Susquehannock language
Susquehannock is an extinct language that once was spoken by the Native American Susquehannocks. It is a part of the Iroquoian language family.
Little of the Susquehannock language has been preserved. The only source is a Vocabula Mahakuassica compiled by the Swedish missionary Johannes Campanius during the 1640s and published with additions in 1696 and 1702. The 1702 book was translated into English in 1834 by Peter S. du Ponceau.
Campanius's vocabulary contains only 89 words but is sufficient to show that Susquehannock was a northern Iroquoian language closely related to those of the Five Nations. Surviving remnants of the Susquehannock language include the river names Conestoga, Juniata, and Swatara.