the General Assembly erected Allegheny County out of parts of Westmoreland and Washington counties, September 24, 1788. This county originally comprised, in addition to its present limits, what are now Armstrong, Beaver, Butler, Crawford, Erie, Mercer, Venango and Warren counties. The act required that the court-house and jail should be located in Allegheny (just across the river from Pittsburgh), but as there was no protection against Indians there, an amendment established Pittsburgh as the county-seat. The first court was held at Fort Pitt; and the next day a ducking-stool was erected for the district, at "The Point" in the three rivers.
In 1785, the dispute between Virginia and Pennsylvania for the possession of Pittsburgh was settled by the award of a joint commission in favor of Pennsylvania.
A writer says that in 1786 Pittsburgh contained thirty-six log houses, one stone and one frame house and five small stores. Another records that the population "is almost entirely Scots and Irish, who live in log houses." A third says of these log houses, "Now and then one had assumed the appearance of neatness and comfort."
