Current timeline of stuff known for the Iron Rose Knights:

Elionne saves Salferi, gets to form an order of knights. Lots of the knights come from already high-ranking backgrounds and all end up pretty legendary.
Amongst other things, they get to kill dragons.
Elionne kills a dragon on her own at one point.
Elionne becomes a saint shortly before vanishing.
At some point, the knights move into answering to the crown.
Phoren Cal did his rebellion and killed the last captain.
[s]They move into producing marmalade.[/s]