I a polish guy and my name, one of most popular in Poland is Bartnik.
It is the name of a very ancient profession. You see in old times there was only one source of sougar : honey stolen from wild bees ( miod - honey in slavic languages )
So each village had its bartnik - a guy who would go to the woods and rob wild bees from their honey - barc is a name for wild bees nest ) no it is not a bee keeper.
Most modern languages lost this term.
Celtic language of old tradition has perchace kept this word.
So,please, how do you translate bartnik into celtic?
Keep your beautiful language alive!