Fletcher Maidstone 1760 1768

Help is need urgently. I have John fletcher c 1742 Maidstone Kent. M Mary Jacob June 1763.Teynham Kent. Thomas c May 1763,Richard c Feb 1765 Mary cMay 1765 All I have for a Mother is Mary and I dont think this Mary is the one. I found their Marriage and John is a Widower,If someone can research the Childrens dates in Maidstone,Teynham, Faversham to find out just where they were born It would be much appreciated.Judy Fletcher KatiKati NZ