Snr
From Longman Dictionary of Contemporary EnglishSnrSnr British EnglishNAME OF A PERSONthe written abbreviation of senior, used after someone’s name → Jnr James Taylor, SnrFrom Longman Business DictionarySnr.Snr. written abbreviation for SENIOR, used after a man’s name to show he is the older of two men with the same name and from the same familyJames Taylor, Snr. → compare Jnr, Jr.