"He's aalways out roamin the lang summers day through ....and I've searched in the meadow and in the fower acre"
is the part written by Johnny. HLR's version on High Level in 1971 credits it. That hasn't been re-issued, as it appeared on a Leader label - and the current owner of that is fairly well-known. I don't want to go there.
Its the 3rd and subsequent "finding" verses that appeared later - Eddie Charles sounds likely.
The oldest title for the tune is "The Bride Has a Bonny Thing" - from c1700 Scots MS IIRC. Then "Joy gang doon the lonnin wi' her" - around 1750 both sides of the Border
Its existed ever since as both a jig, and a song tune, and a tune with variations - there are about 8 sets of these and the study of their development and interrelation is an interesting one.
The path / trackway at the bottom of my garden, which was the "main" road through the farm until 1920 (ish) is called Jack's Lonnen by the locals to this day.
Silver Lonnen and Two Ball Lonnen in Newcastle are unusually suburban (today) occurrences of the word.