This is a wedding song from Shirley Murray in Alleluia Aotearoa.
The text is at at Hope Publishing, where, like AA, they set it to KREMSER, a Dutch tune collected by Eduard Kremser.
It is also set to THE ROAD AND MILES TO DUNDEE, a traditional Scottish tune. Being public domain, this is a good example of the benefits of the Small Church Music site. There are BIAB files, MIDI files, PDF files etc etc there that can be very useful.
I still made my own backing to the tune that must have influenced one of the versions of “Away in a Manger”.