Mordecai Menahem Kaplan (June 11, 1881 – November 8, 1983) was a significant figure in modern Jewish history. He was an American Modern Orthodox rabbi, writer, educator, theologian, philosopher, and activist. Kaplan founded the Reconstructionist movement of Judaism alongside his son-in-law Ira Eisenstein, and his work has had a profound impact on modernizing Judaism. Born in the Russian Empire and raised in New York, Kaplan's early education was strictly Orthodox, but he was drawn to heterodox opinions, leading to internal conflict with his traditional upbringing. He studied at the Jewish Theological Seminary and Columbia University, where he earned a master's degree and a doctorate. Kaplan's long association with the Jewish Theological Seminary, where he taught for over fifty years, significantly influenced the future of Jewish education in America. He emphasized intellectual honesty in confronting modern challenges to traditional Jewish beliefs and practices. Through his teachings and writings, Kaplan advocated for Judaism to be a unifying and creative force, emphasizing its cultural and historical character as well as theological doctrine. His impact on the evolution of Judaism in modern society is widely recognized, solidifying his legacy as a towering figure in Jewish history.

Mordecai Fowler Ham Jr. (April 2, 1877 – November 1, 1961) was a prominent American Independent Baptist evangelist, Christian fundamentalist, and temperance movement leader. Born on a farm in Allen County, Kentucky, he entered the ministry in 1901 and later embarked on a successful radio evangelistic career in 1936. Throughout his life, Ham fervently preached against the consumption of alcohol, a central theme in his sermons.One of his notable associations was with the renowned American evangelist Billy Graham, who credited Ham with playing a pivotal role in his conversion, particularly through his powerful use of Romans 5:8 in the King James version.However, Ham's legacy is not without controversy, as he was known for espousing racist and anti-Semitic conspiracy theories. He propagated classical anti-Semitic canards, portraying Jews as wielding disproportionate political power and influence, and even accusing a prominent Jew, Julius Rosenwald, of operating interracial prostitution rings in Chicago.Despite these contentious views, Ham's body of work includes several writings, such as "The Second Coming of Christ and Revelation," "Believing a Lie," "The Jews," and "The Need of the Anglo – Israel Truth."Throughout his career, Ham left a lasting impact, receiving an honorary degree from Bob Jones University in Greenville, South Carolina. His life and teachings continue to be subjects of study and analysis within religious and historical contexts.

Mordecai Gist (1743–1792) was a prominent figure during the American Revolutionary War, serving as a brigadier general in command of the Maryland Line in the Continental Army. Born in Baltimore, Maryland, Gist was a member of a distinguished family with ties to the military and exploration. He played a crucial role in the defense of popular liberty, leading the Baltimore Independent Company and later being appointed as a brigadier general by the Continental Congress. Gist's military exploits included battles such as the Battle of Long Island and the Battle of Camden, where he demonstrated bravery and determination. After the war, he settled on a plantation near Charleston, South Carolina, and was involved in various organizations, including The Society of the Cincinnati and the Freemasons. Gist passed away at the age of 49 and is buried in St. Michael's Churchyard. His legacy lives on through his papers held at the Maryland Historical Society.

Mordecai ben Abraham Benet (Hebrew: מרדכי בן אברהם בנט, also Marcus Benedict; 1753–1829) was a prominent Talmudist and chief rabbi of Moravia. Born in Csurgó, Hungary, Benet displayed exceptional scholarly abilities from an early age. His education was sponsored by Gabriel Markbreiter and Rabbi Jacob Pinhas Katzelenbogen, who recognized his remarkable talent and nurtured his intellectual development. Benet's dedication to religious studies led him to become a respected figure in the Jewish community, ultimately serving as the Chief Rabbi of Moravia. Despite facing health challenges throughout his life, his steadfast commitment to traditional Jewish teachings and his independent stance on religious reforms earned him widespread respect. Notably, Benet advocated for a balanced approach to education, emphasizing the importance of rabbinical knowledge while also recognizing the value of secular education for rabbis. His influence on traditional Judaism and his insightful perspectives on modern thought continue to be revered within the Jewish scholarly community.Overall, Mordecai ben Abraham Benet's legacy is defined by his scholarly achievements, unwavering commitment to traditional Jewish teachings, and his thoughtful approach to education and religious reforms.

Mordecai Bartley (December 16, 1783 – October 10, 1870) was a prominent figure in Ohio's political landscape, serving as the 18th governor of Ohio. Born in Fayette County, Pennsylvania, Bartley's journey into politics began after marrying Elizabeth Welles and relocating to Jefferson County, Ohio. His notable military service during the War of 1812, where he acted as a captain and adjutant under General William Henry Harrison, further shaped his career. Bartley's dedication to public service led him to the Ohio State Senate and later to the United States House of Representatives. Notably, he succeeded his son, Thomas W. Bartley, as governor, a rare occurrence in American politics. During his gubernatorial term, Ohio's involvement in the Mexican–American War saw the state raising substantial military forces. Bartley's legacy as a Whig politician and his contributions to Ohio's political history solidify his place as a significant figure in American governance.