 While establishing himself as a lawyer in his father's practice, Hopkins married Hester Davis in 1891, with whom he had two children, Sherburne Philbrick on December 3, 1891, and Marjorie on August 5, 1894.Their son, Sherburne, later also a lawyer in the family firm, briefly became a social star when he married Margaret Upton, better known as Peggy Hopkins Joyce, a famous stage actress.The law firm now called Hopkins and Hopkins became one of the top lobbying firms for Wall Street in Washington.