Ishaq is not my only source. All biographers agree that Mo was born around 570 AD. But why do you believe he was born in 570? It's not in the Koran.<quoted text>
I gave you the links so that you could go and buy more books. It was to considered a shopping list.
Earlier you had mentioned that Ibn Asshaq was the only source you had.
By the way, I have read most of the material in your shopping list. Information about Mo in most biographies are all the same, the only difference is the opinion.