Proper noun
Vieillot (plural Vieillots)
A French surname.
Louis Jean Pierre Vieillot (1748–1831) spent ten years studying North American birds and wrote the Histoire naturelle des oiseaux de l'Amerique septentrionale (1807–1808?). Source: Internet
Vieillot pioneered in the use of life-histories and habits in classification. citation Alexander Wilson composed a nine-volume work, American Ornithology, published 1808-14—the first such record of North American birds, significantly predating Audubon. Source: Internet