Egglebert is the youngest realm in the world, being but 5 years old. Its population is mainly gnomes, with some mercenary dwarfs and humans providing protection so Egglebert can finish establishing itself. Most of the mercenaries come from Burning Peak, but a fair number of crusaders from 7 Kingdoms stayed on to see their great work to fruition.
While this is the youngest realm, it is actually the ancestral homeland to gnomes, but they lost their territory during the Long War, so this is really a reestablishment of the previous kingdom. The old king was dead, so the gnomes used their arcane method of selecting a new king. The Gnomes continued their tradition of changing the name of the kingdom to the name of the king, and thus King Egglebert has given his name to his realm. They also continued the gnomish tradition of only giving responsibility to people who can’t avoid it. Gnomes generally hate being responsible.
Egglebert’s Golarion equivalent is Qadira.