A song called "The Plooman Laddie" is in "Ord's Bothy Songs And Ballads" the collection first being published in 1930 though it gives no notes as to the antiquity of the song. It is quite long to type out and I couldn't find it on the net to paste but some corresponding verses to those above are

As my plooman lad gangs roon the toun
Wi a' his irons ringin roon
And oh, he is a bonnie loon
And he whistles when he sees me

    Then it's oh, oh, oh, it's bonnie oh
    To hear him cry hup hi and wo
    An mak his horses straight to go
    What's better than a plooman


I micht hae got a miller in yonder mill
But the smell o the dust wad hae dune me ill
I love my plooman, I love him still
I'm for a plooman laddie

I micht hae got a merchant in yonder shop
But a' his goods they're nae worth a grot
And for himsel, he's a drunken sot
He's nae like my plooman laddie