Jacob Speck (b. 1775) had brothers Michael and George. Their parents were Jacob Speck (b. 1753) and Catharina Keiffer of York County, Penn. The elder Jacob was killed at the Battle of Camden, South Carolina. George was born after Jacob's (1753) death in North Carolina. The three brothers moved to Kentucky/Tennessee. Noah and David Speck belong to another family, of North Carolina, probably unrelated.