I recently looked at the disambiguation page for Andrew on the Japanese Wikipedia, and found that there were several "アンドルー"s, and several "アンドリュー"s.
I couldn't discern any trend that one form tended to be from an earlier time period and the latter was from a later time period, or that one form was from certain languages and the other was from other languages.
Are both forms considered normal transcriptions of "Andrew", or is one form considered more normal than the other?