The land is called The Mark.
The people of the land are called Eorlings.
Gondorians call it Rohan and the people living there the Rohirrim; but
never "Rohannians".
Theolain running away? He wouldn't get far on those little legs unless he was abducted, but that's already been done.
Orcs don't go where the risk is too great compared to the reward.
Maybe I'm ready for an adventure in which Eodwine or someone leaves Scarburg with the expectation of coming back.