Both questions are concerned with the pronunciation of 'Sean' but the earlier Q was later closed as a duplicate of the more recent one.
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
Why do we pronounce Dean as /diːn/ but Sean as /ʃɒn/?
In fact it was this question that was asked before the other and already answered. Why was the earlier question closed rather than the later one?