Hymn Lyrics Search - Name That Hymn

https://youtu.be/63-A5hj4JQU at about 3:00 minutes onwards
This programme was a big part of my childhood and I’ve been trying, to no avail, to find out what hymn this is- any help would be greatly appreciated! ^_^
It sounds like something about ‘a maiden so fair’ but that’s about all I can get. I can suss out the roman numeral chord harmonies if absolutely necessary.

Thanks

Hi elliotwarburton

This is all I have gleaned so far

On a bright summer evening in ? In town
I passed a young maid ? beautiful gown,
with ? in her hand and with flowers in her hair,
I swear that I've never seen a maiden so fair.
But when I looked back she was gone from my sight,
and I was alone on that bright summer night.

Still searching for the hymn title
Nancy

I've long wondered this as well, would like to know the answer if anyone knows.