DNA analysis found that bones deposited in the most elaborate chamber belonged to a man whose parents were first-degree relatives, possibly brother and sister. In history, such inbreeding was usually only found in royal dynasties headed by 'god-kings', such as the pharaohs of ancient Egypt, who married among themselves to keep the royal bloodline 'pure'. This, together with the prestige of the burial, could mean that a similar elite group were responsible for building Newgrange. The man was distantly related to people buried in the Carrowkeel and Carrowmore tombs. However, archaeologist Alasdair Whittle said that social difference in the Neolithic was often short-lived, speculating that an elite may have arisen temporarily in response to crisis. He suggested that Newgrange may have been a communal monument at certain times and co-opted as a personal tomb for brief periods.