No, of course not, since there is no evidence to support the existence of Adam and Eve. Many noble houses have fake genealogies like this, to inflate their own importance. For example, the Emperor of Japan can trace his family history back to Amaterasu, the Japanese goddess of the sun.

No, not factual at all. It is impossible to get past about the 4th century with any accuracy, even with the best lines. Some people will never be able to trace past their great-grandparents with accuracy. It all has to do with the availability of records before certain dates, and , even if those records should exist, whether or not they have survived (due to war, political problems or climate). The reason that royal houses claimed such descents was for legitimacy purposes. The longer your descent, and the more famous people on it, the better your chances to succeed and stay on the throne. So, around the world, you will find that all royal houses link up to their religion's founders, or to their gods. These genealogies are usually fabricated by people close to the royal court, who benefit from the "research" they come up with. And, because, in the past, few people could double check, they were accepted without question. Nowadays, all royal European genealogies have gotten the strictest scrutinies. Here are some important facts to keep in mind though: 1)All those of English descent have some lines in common with old Harry 8; it's just a matter of being able to connect to them. Most British lines cross in the 1200s. My parents are a good example. I have found one definite cross amongst all their ancestors, and several possibles, all around that time. And that it only by being able to trace two families, one on each side. If I could trace other lines, I would, no doubt, find more crosses. 2)All Europeans are descended from Charlemagne, the great Frankish Emperor d 814AD. Once again, it is just a matter of being able to prove it, which most people cannot. I have over 30 descents from him on that one line of my mother's. 3)The queen of Edward III of England, Philippa of Hainault has some of the longest proven descents in europe, going back from Belgium to Hungary, to Byzantium, ARmenia, Georgia, and along the Silk Road to China and North India in the 4th century. It is a descent shared with millions of Europeans. But even these descents are problematic. No chance of anything earlier.