Archibald McClean facts for kids

Archibald McClean (born October 26, 1736 – died April 30, 1786) was an important American land surveyor. He was born in Gettysburg, Pennsylvania, to a family that had moved from Ireland.

Archibald McClean started his career in 1760. He worked for important landowners like Thomas Penn, William Penn, and Frederick, Lord Baltimore. These people owned large areas of land and needed help mapping their borders.

What Was the Mason-Dixon Line?

In 1761, Archibald McClean moved to Philadelphia. The Penn family asked him to help draw the borders for their lands in Pennsylvania and the border with Maryland. This was a very important job!

McClean and his team successfully found a middle point between these different areas. Because of his skill, he became one of the top surveyors in the region. He worked closely with two famous surveyors, Charles Mason and Jeremiah Dixon.

Surveying the Famous Line

Starting in 1763, McClean, along with six of his brothers, Mason, Dixon, and local guides, began mapping what we now call the Mason-Dixon line. This line became a very famous border in American history. It helped settle arguments about where one state ended and another began.

During this time, McClean became a special surveyor for Western York County. He then moved his home from Philadelphia to York, Pennsylvania. Later, around 1774, he also helped David Rittenhouse survey the border between New York and Pennsylvania.

A Member of Important Societies

In 1772, Archibald McClean was chosen to be a member of the American Philosophical Society. This was a group of smart people who studied science, history, and other important subjects to help improve society.

McClean and the Revolutionary War

Archibald McClean was a strong supporter of American independence, often called a "patriot." He was part of the first Committee of Safety in York County. This group helped keep the area safe and organized during the difficult times leading up to the war. He also held many other important roles.

Helping the War Effort

During the American Revolutionary War, the Continental Congress (the government of the new United States) had to move from Philadelphia to York to stay safe. This happened from 1777 to 1778. During this time, McClean's home was used as the country's treasury, where important money and documents were kept!

His daughter, Mary, also played a part. She helped care for soldiers who were sick or hurt. For her kindness and hard work, the Congress officially thanked her.

Archibald McClean passed away in York, Pennsylvania. He is buried in the Lower Marsh Creek Presbyterian Cemetery in Gettysburg.