Gudrun

Gudrun is the old Helican capital, a civilised feudal world of noble houses that raises Gudrunite Rifles and throws a planet-wide party whenever a new regiment founds. House Glaw's Chaos cult in 241.M41 cost it that capital and sent the honour to Thracian Primaris. After the Great Rift it fights as a fortress and Cadian recruiting post, still taking hits out of the Eye. White Dwarf once dumped it in the Thracian Primaris System; later maps put it in Scarus but outside that system, and the snapshot parent stays anyway.