That's the name of my race, and Gallifrey is our planet, in the constellation of Kasterborous, at galactic coordinates 10-0-11-00:02 from Galactic Zero Centre.
In my universe, the Gallifreyans had one of the oldest and mightiest civilizations in the universe, and the Time Lords held absolute power for some ten million years. If we shared the same universe, you would've heard of us, if your Asgard is as great as you suggest.
So, people from multi-dimensions have been all brought together, from different planets? How fascinating!