| Robert Amos | b. 31 May 1741, d. Bet 27 Mar 1817 and 18 Apr 1818 | was a Delegate to the Maryland State House of Delegates (1790, 1792) |
| Jacob Bond | b. Abt 1704, d. Nov 1780 | Was a delegate to the first Maryland Convention held in Annapolis, Maryland in 1774 and a Captain in the Harford County Maryland Militia |
| John Bond | b. 1712 | was one of the owner/proprietors of The Bush River Iron Works, which erected one of the first iron furnances in the colonies |
| Thomas Bond, Jr | b. Abt 1703, d. 1787 | Was a delegate to the first Maryland Convention held in Annapolis, Maryland in 1774, as well as the one held in July of 1775, and one of the original eight Judges/Justices appointed when Harford County, Maryland was created |
| Dr. Thomas Emerson Bond | b. Abt 1774, d. 1856 | One of the founders of the Medical School of the University of Maryland |
| Augustus W Bradford | b. 9 Jan 1806, d. 1 Mar 1881 | , he was the Governor of Maryland during the Civil War |
| Samuel Bradford | b. Abt 1680 | was Bishop of Rochester and Dean of Westminster |
| Samuel Bradford | b. Abt 1774 | was a Delegate for Harford County to the Maryland State House of Delegates (1814-1817) |
| Captain William Bradford | b. 1739, d. 12 Feb 1794 | was a signer of the Bush Declaration, which has been characterized as the first Declaration of Independence, and was signed just 3 weeks prior to the Battles of Lexington and Concord which signaled the beginning of the American Revolution |
| John Durham | b. 22 Feb 1737, d. Sep 1801 | was a signer of the Bush Declaration, which has been characterized as the first Declaration of Independence, and was signed just 3 weeks prior to the Battles of Lexington and Concord which signaled the beginning of the American Revolution |
| Henry Jacob Hoffacker | b. 23 Feb 1863, d. 17 Sep 1953 | Served as Postmaster of Manchester, Carroll County, Maryland; was a member of the Maryland House of Delegates (1900-1902); and was one of the organizers of the Manchester Bank and the Farmer's State Bank of Hanover |
| Josiah Jenkins | b. Abt 1795 | During the War of 1812, he led 3 companies on a march to North Point. The British landed and while flanking Major Jenkins, captured some of his men, who were taken as prisoners to Halifax. Francis Scott Key went on board the vessel to try arrange an exchange of prisoners, but that effort failed. However, while on that ship, he composed "The Star Spangled Banner". |
| John Simpson Klinefelter | b. 28 Jul 1810, d. 15 Jun 1885 | He was the captain of the steamboat "Pennsylvania", which exploded a few days after Mark Twain left the crew. Mark Twain's brother Henry was aboard and killed in the accident when 4 of the 8 boilers exploded. The incident is mentioned in Mark Twain's "Life on the Mississippi". |
| George March McComas | b. 1821 | was one of four representatives of Harford County at the Third Maryland Constitutional Convention in 1864 at Annapolis, Maryland |
| Henry Gough McComas | b. 20 Sep 1795, d. 12 Sep 1814 | Henry McComas was in the Battle of North Point during the war of 1812. He and a friend Daniel Wells, are credited with killing the British General Ross, and stopping the invasion of Baltimore (by land). The British then retreated to their ships and began the bombardment, during which Francis Scott Key wrote the Star Spangled Banner. A monument was erected to honor the Battle of North Point which bears Henry Gough McComas' name (among others) |
| James McComas | b. 13 Sep 1735, d. 19 Feb 1791 | James McComas was an important man in Harford County, Maryland. He was a signer of the Bush Declaration (the first declaration of independence made by any representative body); a Lt. Colonel in the Militia during the Revolutionary War; a significant land owner in the county; a delegate to several Maryland Conventions; a member of the Lower House of the Maryland Legislature; a justice; and a tax commissioner. |
| Louis Emory McComas | b. 28 Oct 1846, d. 11 Nov 1907 | Louis McComas was a Republican Congressman (1883-1891), and later a Senator (1899-1905), from Maryland. |
| Nicholas Day McComas | b. Abt 1752, d. Abt 1816 | was a Delegate for Harford County to the Maryland State House of Delegates (1794-1795, 1797-1799) |
| Oliver Parker McComas, Jr | b. Sep 1895, d. 25 Nov 1957 | Oliver Parker McComas graduated from Princeton and became a banker. He was a member of the Board of Trustees of the Lenox Hill Hospital in New York, and later was president of the United Hospital Fund of New York. He became president of the Phillip Morris Company and lived on Park Avenue. He was described as "a man of high humanitarian principle." |
| William McComas | b. 19 Sep 1790, d. 2 Aug 1857 | William McComas donation 4 acres of land to the Mountain Christian Church in Joppa, Harford County, Maryland, to build their first church building. |
| Richard Milhous Nixon | b. 9 Jan 1913, d. 22 Apr 1994 | He was the 37th President of the United States. He was known for reducing the tension in 1972 between the United States and the countries of China and the Union of Soviet Socialistic Republics, in 1973 ending American's involvement with North Vietnam, and in the dark shadow of a scandal, being the first to resign from the office of United States President. Other achievements of his presidency included ending the military draft, starting environmental programs such as Earth Day and the Clean Air Act, busing students to enforce school racial integration, supporting Women's Rights, and supporting the Space program with the first American astronauts landing on the moon. Born the second of five children of a poor Quaker family, he was raised on a lemon farm in California. |
| Benjamin Bradford Norris | b. 1745, d. Apr 1790 | was a signer of the Bush Declaration, which has been characterized as the first Declaration of Independence, and was signed just 3 weeks prior to the Battles of Lexington and Concord which signaled the beginning of the American Revolution and was a Delegate for Harford County in the Maryland State House of Representatives (1786-1789) |
| Jacob Norris | b. 1753 | was a Delegate for Harford County in the Maryland State House of Delegates (1796) |
| Charles Francis Preston | b. 3 May 1871 | He was awarded the Navy Cross for distinguished service as Commanding Officer of the USS Northern Pacific engaged in the hazardous duty of transporting and escorting troops and supplies to European ports through waters infested with enemy submarines and mines. |
| Dr. Jacob Alexander Preston | b. 1793, d. 1869 | was a member of the House of Representatives (1843-1845) |
| James Bond Preston | b. 1827, d. 1902 | was a Delegate for Harford County to the Maryland State House of Delegates (1880-1882) |
| James Harry Preston | b. 23 Mar 1860, d. 14 Jul 1938 | He was a Member of the Maryland House of Delegates (1890-1894) and Speaker (1894), and Mayor of Baltimore (1911-1919). He also served on Governor Brown's staff (1892-1896) and on the Board of Police Commissioners (1904-1908). He was a lawyer who also was President, Vice-President and Directory of numerous businesses. |
| Walter Wilks Preston | b. Abt 1861 | was a Delegate for Harford County to the Maryland State House of Delegates (1888-1890) |
| Calvin Edwin Ripkin | b. 17 Dec 1935 | Cal Ripken, Sr., was a professional baseball player, and later a manager and coach for the Baltimore Orioles |
| Calvin Edwin Ripkin, Jr | b. 24 Aug 1960 | Cal Ripken, Jr., was a professional baseball player for the Baltimore Orioles. He played shortstop and third base for 21 seasons. Ripken compiled 3,184 hits, 431 home runs, and 1,695 runs batted in during his career, and he won two Gold Glove Awards for his defense. He was a 19-time All-Star and was twice named American League Most Valuable Player. Ripken holds the record for consecutive games played, 2,632, surpassing Lou Gehrig's streak of 2,130 that had stood for 56 years and that many deemed unbreakable. In 2007, he was elected into the National Baseball Hall of Fame in his first year of eligibility, and as of 2016, has the fourth highest voting percentage of all time (98.53%). In 2001, his uniform number, 8, was retired by the Baltimore Orioles. |
| Johannes Ruhl | b. 27 Sep 1739, d. 23 Jan 1825 | Johannes Ruhl was one of the founders of Bethlehem Union Church, also known as Steltz Union Church, in Codorus Township, York County, Pennsylvania. |
| Aquila Scott | b. 1751 | was a Delegate to the Maryland State House of Delegates (1787-1788) |
| Daniel Scott, Jr | b. Abt 1680, d. 20 Mar 1745 | One of the original town commissioners of Joppa, Harford County, Maryland, who helped to lay out the original town land lots |
| Daniel Scott | b. 1747, d. 1828 | was a signer of the Bush Declaration, which has been characterized as the first Declaration of Independence, and was signed just 3 weeks prior to the Battles of Lexington and Concord which signaled the beginning of the American Revolution |
| William Slade | b. 30 Sep 1822 | was a member of the Maryland Legislature |
| William Smithson | b. Abt 1745, d. 17 Jan 1809 | was a signer of the Bush Declaration, which has been characterized as the first Declaration of Independence, and was signed just 3 weeks prior to the Battles of Lexington and Concord which signaled the beginning of the American Revolution |
| William Smithson | b. Abt 1787 | was a Delegate for Harford County to the Maryland State House of Delegates (1827-1828) |
| John Taylor | b. Abt 1735 | was a signer of the Bush Declaration, which has been characterized as the first Declaration of Independence, and was signed just 3 weeks prior to the Battles of Lexington and Concord which signaled the beginning of the American Revolution |
| Hans Jacob Utz | b. 26 Feb 1705, d. 1775 | Hans Jacob Utz was one of the first settlers of the Manchester District in Maryland, considered at the time to be the "frontier". He was one of the original four trustees for "The German Church Lands" which became the Reformed and Evangelical Lutheran Church, and which today is known as Trinty Church in Manchester. |
| Abraham Whitaker | b. 1 Aug 1737, d. 1784 | was a signer of the Bush Declaration, which has been characterized as the first Declaration of Independence, and was signed just 3 weeks prior to the Battles of Lexington and Concord which signaled the beginning of the American Revolution |