Appletons' Cyclopædia of American Biography/Dennison, William
DENNIS, George Robertson, senator, b. in White Haven, Somerset co., Md., 8 April, 1822; d. there, 13 Aug., 1882. He was graduated at the Polytechnic institute of Troy, N. Y., and the Uni- versity of Virginia. He studied medicine at the University of Pennsylvania, was graduated there in 1842, and, after practising for several years, he re- tired and devoted his attention to agriculture. He was a delegate to the National convention that nominated Fillmore in 1856, and to the Democratic national convention in 1868. serving as one of the vice-presidents. He was elected to the Maryland state senate in 1854, to the house of delegates in 1867, and to the senate again in 1871. While fill- ing this office he was elected U. S. senator from Maryland as a democrat, serving until 187;:3.