William Henry Law (September 11, 1803 – March 27, 1881) was an American politician. Law, third son of the Hon. Lyman Law, and grandson of the Hon. Richard Law, was born in New London, Conn., September 11, 1803. His mother was Elizabeth, daughter of Amasa Learned. In February, 1829, he married Mary Lee, of Norwich, who died in October, 1839, leaving one daughter. In October, 1855, he married Harriet B. Mills, of Mississippi, who survived him with one son, a graduate of Yale in the class of 1878. This article incorporates public domain material from the 1881 Yale Obituary Record.