The story
- Proto-Indo-European · derived from*(s)mer-“to care for”
- Proto-Celtic · derived from*mori
- Middle Irish · derived frommúirn
- Irish · derived froma mhuirnín“my darling”
- English todayavourneen
From Irish a mhuirnín (“my darling”, literally “O darling (vocative)”), from Middle Irish múirn, from Proto-Celtic *mori, from Proto-Indo-European *(s)mer- (“to care for”), see also Latin memoria, Ancient Greek μέριμνα (mérimna, “care”).
Words from the same roots
Proto-Celtic*mori all →
murraymerlinmorayMurielMorecambe
Proto-Indo-European*(s)mer- all →
memoryremembermeritemeritusdemurgeomori
Etymology from Wiktionary, CC BY-SA 4.0.