you are asking two different questions would i do it or is it suitable for folk clubs, so why are you asking ME these questions, why ndo you not ask jim carroll.let us look at the lyrics
I was twenty-four years old
When I met the woman I would call my own
Twenty-two grand kids now growing old
In that house that your brother bought ya
On the summer day when I proposed
I made that wedding ring from dentist gold
And I asked her father, but her daddy said, "No
You can't marry my daughter"
She and I went on the run
Don't care about religion
I'm gonna marry the woman I love
Down by the Wexford border
She was Nancy Mulligan
And I was William Sheeran
She took my name and then we were one
Down by the Wexford border
Well, met her at Guy's in the second world war
And she was working on a soldier's ward
Never had I seen such beauty before
The moment that I saw her
Nancy was my yellow rose
And we got married wearing borrowed clothes
We got eight children now growing old
Five sons and three daughters
She and I went on the run
Don't care about religion
I'm gonna marry the woman I love
Down by the Wexford border
She was Nancy Mulligan
And I was William Sheeran
She took my name and then we were one
Down by the Wexford border
From her snow white streak in her jet black hair
Over sixty years I've been loving her
Now we're sat by the fire in our old armchairs
You know Nancy, I adore ya
From a farm boy born near Belfast town
I never worried about the king and crown
'Cause I found my heart upon the southern ground
There's no difference, I assure ya
She and I went on the run
Don't care about religion
I'm gonna marry the woman I love
Down by the Wexford border
She was Nancy Mulligan
And I was William Sheeran
She took my name and then we were one
Down by the Wexford border
now let us look at a song it reminds me of
I've got a pal,
    A reg'lar out an' outer,
    She's a dear good old gal,
    I'll tell yer all about 'er.
    It's many years since fust we met,
    'Er 'air was then as black as jet,
    It's whiter now, but she don't fret,
    Not my old gall

    We've been together now for forty years,
    An' it don't seem a day too much,
    There ain't a lady livin' in the land
    As I'd swop for my dear old Dutch.

    I calls 'er Sal,
    'Er proper name is Sairer,
    An' yer may find a gal
    As you'd consider fairer.
    She ain't a angel — she can start
    A-jawin' till it makes yer smart,
    She's just a woman, bless 'er eart,
    Is my old gal!

    We've been together now for forty years,
    An' it don't seem a day too much,
    There ain't a lady livin' in the land
    As I'd swop for my dear old Dutch.

    Sweet fine old gal,
    For worlds I wouldn't lose 'er,
    She's a dear good old gal,
    An' that's what made me choose 'er.
    She's stuck to me through thick and thin,
    When luck was out, when luck was in,
    Ah wot a wife to me she's been,
    An' wot a pal!

    We've been together now for forty years,
    An' it don't seem a day too much,
    There ain't a lady livin' in the land
    As I'd swop for my dear old Dutch.

    I sees yer Sal —
    Yer pretty ribbons sportin'
    Many years now, old gal,
    Since them young days of courtin'.
    I ain't a coward, still I trust
    When we've to part, as part we must,
    That Death may come and take me fust
    To wait... my pal!

    We've been together now for forty years,
    An' it don't seem a day too much,
    There ain't a lady livin' in the land
    As I'd swop for my dear old Dutch.
Dave , i have never had an inclination to sing the AlberrtChevalier song so why would i want to sing the ed sheeran song,
as for suitabilty in folk clubs, I sing what i want to sing, I let other people sing whatever they want, however that does not mean i would pay money to see certain performers, i would not bother to pay money too see ed sheeran, however i would pay to see alf garnett in concert, because he is so funny and because he makes good political points through satire, but i would not go to see him [alf ]in a folk club,
dave, you speak with a forked tongue you cannot catch me out, enjoy this clip
https://www.youtube.com/watch?v=bp8aTvVqE7I