I agree with the above advice that you need to study the original registers.
One of my ancestors married twice - both wives were named Jane and there were children from each marriage. Most of the trees on Ancestry have all the children as the product of just one of the Janes. However, if they actually read the full set of registers for the parish, they would discover the first marriage, bp & some burials of the children of that marriage, burial of first wife, second marriage and bp of subsequent children, burial of wife 2 and burial of the ancestor.