The second Great House besides Lindblade is Praetoria. I imagine it as a house inspired by ancient Rome and Greece,
and it has a turbulent history filled with war and hostilities.So far I reserved four systems, including Praetoria and Lovanium*.
The three remaining systems have not been named yet.
It will need a full set of ships and some props like defence satellites and military outposts.
* Lovanium doesn't feel right.