Jacob Jones Janeway (1774-1858) was a clergyman. His family came from England early in the 17th century, one of whom bore with him the charter of Trinity church, of which he was a vestryman. Jacob was graduated at Columbia in 1794, and after studying theology with Dr. John H. Livingston was ordained in 1799 a colleague of Dr. Ashbel Green in the 2d Presbyterian church of Philadelphia, where he remained till 1828.