 (Prince) duffield, and a descendant of George Duffield, who emigrated from Ireland to Pequea Township, Pennsylvania, in 1720, and of Carel de Beauvais, who emigrated from France and settled in New York in 1659.Osborne attended the Polytechnic University of New York and was a graduate from Columbia College (New York), A.G., 1879, A.M., 1882, and from the Columbia Law School, LL.B., 1881.He was admitted to the bar in 1881 and practised in New York City, 1881–92.