In the 1850 Kittanning, Armstrong Co. PA census on page 208:
George Kron (33, saddle maker, Germany), Nancy Kron (29, PA), John Kron (5, PA), Mary Kron (1, PA), and Susannah Lowars (23, PA).
Therefore this George KRON was born about 1827. This could be the same person if he remarried. The children were baptised in the First Presbyterian Church of Kittanning in 1852, and the church records mention their full names as John R. Johnston KRONE and Mary Mathews KRONE.