How would Riverland’s nobility treat Ironborn House in Riverland

Essentially this hypothetical House is a cadet house of House Hoare originated from Harwyn Hoare and one of his riverlander salt wife. They rule part of Cape of Eagle thus, making them neighbor to the Mallister (occupying some part of canonical Mallister land). They know where the wind blows during Aegon’s conquest and once Ironborn grip on Riverland start collapsing they declare support for Aegon.

They have made a lot of effort to assimilated themselves into Riverlander nobility. They have adopt the Faith of the Seven, with a unique quirk that despite no longer worshipping Drown God they still are fearful of Storm God and pray to the Seven to protect them from his wrath before sailing into ocean (thus, in a way recognized deity beyond the Seven).

They try to create marriage ties with Riverland noble house that are willing to do so. As well as trying to combat Ironborn raider in their land. However, due to blood ties of their populace, sometime their common folk offer shelter Ironborn raider. Something they tried to seriously crackdown. This is something they actively trying to stop, to some success.

Not sure if I tagged this correctly, this is for my own world building exercise not exactly for fanfic. But since, there is no precedence in cannon I am not sure how to characterized other Riverland noble perception of them. Especially in way where there are a lot of tension, but Riverland noble don’t hate them enough to wipe them out. What is the bare minimum they need to do to survive?