 He was city attorney of Detroit from 1876 to 1880 and lecturer on medical jurisprudence in the Michigan College of Medicine at Detroit in 1881 and 1882.In 1880, Maybury ran as a Democrat for a seat in the U.S. House of Representatives from Michigan's 1st congressional district, losing in the general election to Republican Henry W. Lord.Maybury was elected in 1882 to the 48th and again in 1884 to the 49th Congresses, serving from March 4, 1883 to March 3, 1887.