John M. S. Causin was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 politician.

Causin was born in St. Mary's County, Maryland. He studied law, was admitted to the bar in Prince George's County, Maryland

Prince George's County, Maryland

Prince George's County is a county located in the U.S. state of Maryland, immediately north, east, and south of Washington, DC. As of 2010, it has a population of 863,420 and is the wealthiest African-American majority county in the nation....

 about 1836, and returned to St. Mary's County to practice. He served as a member of the Maryland House of Delegates

Maryland House of Delegates

The Maryland House of Delegates is the lower house of the General Assembly, the state legislature of the U.S. state of Maryland, and is composed of 141 Delegates elected from 47 districts. The House chamber is located in the state capitol building on State Circle in Annapolis...

 in 1837 and again 1843, and was elected as a Whig

Whig Party (United States)

The Whig Party was a political party of the United States during the era of Jacksonian democracy. Considered integral to the Second Party System and operating from the early 1830s to the mid-1850s, the party was formed in opposition to the policies of President Andrew Jackson and his Democratic...

 to the Twenty-eighth Congress, serving from March 4, 1843 to March 3, 1845.

After his tenure in Congress, Causin moved to Annapolis, Maryland

Annapolis, Maryland

Annapolis is the capital of the U.S. state of Maryland, as well as the county seat of Anne Arundel County. It had a population of 38,394 at the 2010 census and is situated on the Chesapeake Bay at the mouth of the Severn River, south of Baltimore and about east of Washington, D.C. Annapolis is...

, and served as a delegate to the State constitutional convention. He later moved to Chicago, Illinois, in 1858 and resumed the practice of law. He died in Cairo, Illinois

Cairo, Illinois

Cairo is the southernmost city in the U.S. state of Illinois. It is the county seat of Alexander County. Cairo is located at the confluence of the Mississippi and Ohio rivers. The rivers converge at Fort Defiance State Park, an American Civil War fort that was commanded by General Ulysses S. Grant...

, and is interred in the City Cemetery (now Lincoln Park) of Chicago.