I was reading and found the bit below and it has been bothering me.
Do we have any confirmation on Methos' past? After the Horsemen that
is?

Cause I found this http://en.wikipedia.org/wiki/Methos#History and
didn't know where this info comes from. I never read any of the
books. Is it maybe from one of them?

Methos was the mythical "oldest Immortal," who had seen the rise and
fall of many civilizations, including the Egyptian, Roman, and
modern eras.

Methos was about 5000 years old. His birth date and place were lost,
because he couldn't remember the exact details. However it seems
that Methos was born either in ancient Mesopotamia or ancient Egypt
in around 3000 BC. He was the second son of three boys and two
girls, and he lived with his family. When he was approximately 28
years old, he died when a sandstorm trapped him and his family. His
family died and Methos became Immortal. Afterwards, he roamed the
earth without knowing his immortality. People thought he was a demon
and tried to kill him many times. Methos learnt how to survive from
then on. By the time he was an estimated 603 years old, he took his
first Quickening. He then realized that there were many Immortals
besides him, and he started to learn about The Game.

When he was a slave back in Ancient Egypt, an Immortal Pharaoh named
Djer took him under his wing but apparently the ruthless Pharaoh
killed his nomad wife during a Smiting of Sinai or killing of all
nomads, so Methos buried him alive inside a sarcophagus within a
deep tomb and claimed his throne as a Pharaoh of Egypt. His journey
after that was unknown.