Identify the number equivalent of the letter in the surnames of these famous people from Wales
Use common/stage names as opposed to given/birth names where applicable. Beware of double-barrelled surnames - there are two in the pictures.
N 51° 2(B-A).(D-C)(F-E)(H-G) W 003° 1(J-K).(M-L)(P-N)(R-Q)
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Envyvatf oruvaq ynzc cbfg.