Lafayette Mendel

Lafayette Benedict Mendel was an American biochemist known for his work in nutrition including the study of Vitamin A, Vitamin B, lysine and tryptophan.

Mendel was born in Delhi, New York, son of Benedict Mendel, a merchant born in Aufhausen, Germany in 1833, and Pauline Ullman, born in Eschenau, Germany. His father immigrated to the United States from Germany in 1851, his mother in 1870.

Source: Wikipedia