From Longman Dictionary of Contemporary Englishmy lordmy lordBritish English spokenPGO used to address a judge or bishop, and in the past to address a lord → lord
Examples from the Corpus
my lord• I've been looking for an excuse to cut my lord Heuil out of the pack, and now you give me this.• Look at him, my Lord.• Sometimes there is love - indeed I loved my lord dearly.• No, my lord, I beg you keep this thing secret.• You're not - Oh, my Lord and Saviour!• I fear he is not in such sound health as you may think, my lord.• Visitors to Manchester Arena are greeted with a large crowd, singing, Kum ba yah, my Lord. 