The following data is extracted from Sketches Of Western North Carolina, Historical And Biographical Mecklenburg County, North Carolina.
Cynthia Jack, eldest child and only daughter of Capt. James Jack, married A.S. Cosby, and settled in Mississippi. After his death the widow and family settled in Louisiana, about 1814. Their descendants were: 1. Margaret. 2. Cynthia. 3. James; and 4. Dr. Charles Cosby. Patrick Jack, eldest son of Captain James Jack, was Colonel of the 8th Regiment U.S. Infantry, in the war of 1812, stationed at Savannah. He sustained an elevated position in society, frequently represented Elbert county in the State Senate, and died in 1820. His children were: 1. Patrick. 2. William II.; and 3. James W. Jack. Patrick Jack, the eldest son, married Miss Spencer, and, in turn, had two daughters, Harriet and Margaret, and six sons: 1. James. 2. William II. 3. Patrick C. 4. Spencer II. 5. Abner; and G. Churchill Jack. Abner died several years ago in Mississippi--a planter by occupation, and a man of wealth.
Source: Sketches Of Western North Carolina, Historical And Biographical Mecklenburg County, North Carolina