Mr. W. A. COOK, of Washington, Iowa, has during the past week been among friends here. He is a delegate to the U. P. General Assembly in Allegheny. Mr. COOK's father was John COOK, a brother of Miss Elizabeth COOK, of Arabella street, and whose wife was Jane SAVAGE, daughter of Wm. SAVAGE, who formerly lived in North Fayette, and sister of the mother of the LOCKHART brothers. Jane COOK was a cousin of the Doctor and of S. H. COOK.