There are some things that must also be taken into account here also and that is the fact that there are a number of short periods of time that we cannot pin down to specifics but they do not represent that many years at any point. It must also be remembered that some of the reigns of the king were co-reigns. It is impossible to determine with any degree of accuracy by I think the time frame can be determined within a plus or minus of 500 years, maybe less.