JA meaning in Community ?

Jonathan Alder (September 17, 1773 – January 30, 1849) was an American pioneer, and the first white settler in Madison County, Ohio. As a young child living in Virginia, Alder was kidnapped by Shawnee Indians, and later adopted by a Mingo chief in the Ohio Country. He lived with the Native Americans for many years before returning to the white community.

Alder settled near present-day Plain City, Ohio, where he became a farmer. He was reunited with his birth family, which moved to Ohio with him, and also had a short career as a military officer during the War of 1812. A middle school, high school, and school district in Plain City all bear his name.