sentences:  Their son Arthur Dimon Osborne (April 17, 1828 – April 14, 1920) was a lawyer, law professor at Yale University, and president of the Second National Bank of New Haven.His son Thomas Burr Osborne (August 5, 1859 – January 29, 1929) was a biochemist and co-discoverer of Vitamin A.He was admitted to the bar in 1820 and commenced practice in Fairfield, Connecticut.