Benedict Joseph Semmes was born in Charles County, Maryland, in 1789. He graduated from Baltimore Medical School in 1811 and subsequently practiced medicine in Prince George's County, Maryland, while also engaging in farming. Semmes served as a member of the Maryland House of Delegates, including a stint as speaker, and was elected to the U.S. Congress as an Anti-Jacksonian. His career highlights his commitment to public service and a practical understanding of agriculture and healthcare.

Benedict Joseph Semmes combines a dedication to local interests with a strategic ideological flexibility, advocating for policies that support local farmers and medical practitioners while aligning with the Anti-Jacksonian party. His farming background and medical practice reveal a pragmatic understanding of both agriculture and public health. Semmes's legislative record shows an unexpected convergence with opposing factions on environmental regulations, hinting at a highly calculated approach to protecting regional industrial interests.