Source, Welsh Family History Archive. Listed below are meaning to the most common Welsh language words and phrases found on gravestones in Wales. Welsh words and phrases (welsh spelling variants in brackets) Er cof am-------In memory of Er cof an(n)wyl am----------In loving memory of (g)wraig------------------wife (of) priod (briod)-----------spouse (male or female) an (n) wyl wraig-------beloved wife(of) an (n) wyl briod-------beloved wife/husband (of) chwaer-----------------sister (of) hefyd------------------also eto / etto--------------also ei ferch / ei merch / eu merch---his /her / their daughter. ei fab / ei mab /eu mab---his/ her/ their son yn eu mabandod------------in infancy yn mlwydd oed--------------age in years yn mis oed--------------------age in months corffwys (yn gorffwys) mewn hedd---rest in peace. Mam----------------------Mother Tad----------------------Father. Nain-------------------Grandmother Taid-------------------Grandfather. CALENDAR MONTHS. ( common abbreviations in brackets ) Awst-----------------------------August. Chwefror (Chwe.)-----------February. Ebrill (Ebr.)------------------April. Gorffenaf / Gorphenaf (Gor.)-------July. Hydref/ Hedref (Hyd./Hed.)-----October. Ionawr (Ion.)-----------------January. Mai----------------------May. Mawrth (Maw.)----------March. Medi---------------------September Mehefin (Meh.)-------June. Rhagfyr(Rhag.)-----------December Tachwedd ( Tach.)-------November.