I think Merchant Republic dynasty/houses can also spawn with their unique CoA even when not a Merchant Republic. Here's a few examples: Orsini has a duplicate Greek house in 1337. Some duplicate dynasty names will appear occassionaly that won't be the true historical house with a cool CoA. But i would say its 90% accurate if you want to get those dynasties to appear.Ĥ. I've had de Luxembourg spawn from a French lowborn for example.
The culture listed, isn't necessarily a requirement for the unique historical house to spawn. If you play at a later start date, 1066 for example then any Dynasty I have listed as 769 or 867 only won't spawn because it's already died out.ģ. the Komnenos Dynasty doesn't exist yet, then land a few Greek lowborns and eventually you'll get it to spawn.Ģ.
If you start at 769 Charlemagne date, Historical Dynasties from later dates can spawn, example.