nice to see you back Nigel.
Your point re Boddagh as 'high status' is at odds both with Moore (boddagh = churl) and Kelly in whose dictionary = clown, churl, stingy person (his 'illiberal') - surely any derived from Bishop would be aspickagh or similar or are you thinking of deriving from English bishop's.
The Stowells are supposed comeovers with the Montacutes some 2 generations prior to the Stanley takeover and 150 years prior to 1st Manorial Roll - easily enough time to 'go native'.