Notwithstanding the confusion and ill-feeling which prevailed among the officers and men during the building of Fort Augusta, it seems that a secret directing power had prevented everything from falling into chaos and much good was accomplished. Had it not been for this unseen power, the fort would have been captured by the French and Indians and the whole North and West Branch Valleys would have been overrun and held by the enemy at this most critical period in the history of the Province.
He was a most conspicuous figure on the early frontiers. Even Colonel Clapham’s enemies, or those who thought he was not an acceptable officer, must have been moved to deep and sincere sympathy when they learned the sad fate which so soon afterward befell him and his family on the western frontier of Pennsylvania.
He did not long remain out of the service when his resignation as commander of the garrison at Fort Augusta was accepted. In 1763 he was an active officer in the expedition of Colonel Henry Bouquet on the western frontier of the Province.
He was in command of a formidable scouting party when he was murdered on Sewickley Creek, near where the town of West Newton now stands.
This tragedy occurred on the afternoon of May 28, 1763, and was committed by The Wolf, Kektuscung and two other Indians, one of whom was called Butler.
Colonel Clapham had taken his family to this frontier, and was very near his own home when these Indians shot him from ambush, rushed into his house, killed and scalped his wife and three children and a woman. The two women were treated with brutal indecency. They left evidences of the fact that they were paying an old score with Colonel Clapham, and the scene was horrible to behold.
At the time of the murder of the Claphams, three men who were working at some distance from the Clapham house escaped through the woods and carried the terrible news to the garrison in Fort Pitt.
Two soldiers, who were in Colonel Clapham’s detail, and stationed at a sawmill near the fort, were killed and scalped by these same Indians.
It seems that there were others slain in this massacre for Colonel Burd entered in his journal, June 5, 1763, that “John Harris gave me an account of Colonel Clapham and twelve men being killed near Pittsburgh, and two Royal Americans being killed at the saw mill.”
Colonel Bouquet in a letter to General Amherst, dated Fort Pitt, May 31, 1763, says: “We have most melancholy reports here * * * the Indians have broke out in several places, and murdered Colonel Clapham and his family.”