"Grandeur Long Vanished"

The Stars Are Also Fire, 6.

Nostalgic fellowships:

the Fireball Trothdom;

the Ronin;

the Swagmen;

the Believers.

A swagman sounds like an Okie or a tramp. Are the Believers what is left of Christianity? See Old Believers.

These fellowships have:

"...rituals, social gatherings, mutual helpfulness, and little else." (p. 99)

In the Trothdom, some secret lore, presumably unimportant, is said to be passed down from Rydberg to Rydberg. For the significance of this title, see Names And Titles.

The name of a powerful company survives in a mere fellowship. However, rituals, gatherings and helpfulness are a lot more than nothing.