Identify the number equivalent of the letter in the surnames of these famous people from Cardiff
Use common/stage names as opposed to given/birth names where applicable.
N51° 2(B-A).(C-D)(E-F-1)(G-H+2) W 003° 1(J-K).(M-L)(N-P)(Q-R)
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Pnpur: Zntargvp. Funqrf bs terra.