This mansion, slight, inefficient and hastily erected as it was, must have afforded but poor shelter against the severity of a season which is everywhere referred to as one of the coldest ever known. It is asserted that during the winter of 1779-80, still remembered by some as "_The Hard Winter_," the wild animals were "starved and frozen in the forests, while the domestic ones fared no better in the settlements." The rigors of the season, however, did not prevent the influx of immigration; although several families were compelled to endure its severity on their route through the wilderness from Cumberland Gap, and were even delayed in their march till the opening of the Spring. As soon however as the rivers were freed from ice and the intense cold had yielded to the softer airs of the new season, we hear of the arrival of no less than three hundred family boats at the Falls. The causes which influenced so large an immigration hither were various, not the least among them being the security insured at this fort by the presence of Col. Clark. So entire and perfect had been the success of this gallant officer in every expedition, even against the most fearful odds, that to be under his command had come to be reckoned as holding a place among the Invincibles. Let the circumstances be what they might, it is certain that Louisville with her then population of six hundred souls, was growing to be a place worthy of high consideration, and accordingly we find that in May of this year (1780) the legislature of Virginia passed the following "_Act for establishing the town of Louisville at the Falls of Ohio._"