Kittanning, Pennsylvania  Kittanning ( pronounced ) is a borough and the county seat of Armstrong County in the U.S. state of Pennsylvania. It is situated northeast of Pittsburgh, along the east bank of the Allegheny River. The name is derived from "Kithanink", which means 'on the main river' in Lenape or the Delaware language, from "kit-" 'big' + "hane" 'mountain river' + -"ink" (suffix used in place names). "The main river" is a Lenape term for the Allegheny and Ohio combined, which they considered as all one river. The borough and its bridge have been used as a setting for several recent films. The borough is located on the east bank of the Allegheny River, founded on the site of the eighteenth-century Lenape (Delaware) village of Kittanning at the western end of the Kittanning Path, an ancient Native American path. In 1756, the village was destroyed by John Armstrong, Sr. at the Battle of Kittanning during the French and Indian War. During the attack, a blast from the explosion of gunpowder stored in Captain Jacobs's house was heard in Pittsburgh, Pennsylvania, 44 miles away. Kittanning was designated as the seat of Armstrong County when the county was organized. It was settled by European Americans largely after the American Revolutionary War, although Anthony Sadowski (also recorded by the anglicized name of Sandusky), a prominent Polish-American trader, and other Native American traders operated here before the war. By the early in the 20th century, the city had developed considerable industry: large iron and steel works, foundries, and coal mines, all associated with the steel and iron industries of Pittsburgh; glassworks, flour and lumber mills; china, pottery, brick, lime, and clay works; and mirror and typewriter factories, breweries, etc. It reached its peak of population in 1930 and was adversely affected by the Great Depression. After World War II, changes in industry and restructuring of heavy industry caused a loss of jobs in many of these works, with an associated population decline. The playground on North Jefferson Street was developed on the former site of the historic Kittanning Cemetery. In order to enable this, the city moved 274 graves in 1960 to a new cemetery formed along Troy Hill Road. In 1900, 3,902 people lived in Kittanning, and in 1910, there were 4,311 inhabitants.