No dual identity
Place of Birth
Ultimate X-Men #16 (2002)
A couple of years ago, Charles got back in touch with Moira. He had broken ties with Erik, and was setting up a mutant school in the U.S.A.; he also intended to establish a secret mutant hospital, run by Moira, in part as a way of ensuring David got the best medical attention. Moira accepted, setting up base on Muir Island off the North coast of Scotland.
When David awoke and went on a killing spree, Moira called in Charles and his students, the X-Men. They pursued David to Aberdeen and then Berlin, where he was apparently slain. When the X-Men became fugitives for hiding Magneto's survival from the authorities, Moira went into hiding with her charges. After the X-Men captured Magneto, Moira returned to Muir Island.