Here's another version from Berzilla Wallin (you can hear her excellent - though it seems a bit muddled - version on youtube - Love Has Brought Me To Despair).

The first line does seem to end in jade. It's listed as such in the Roud index (Roud 60)-for the versions from Berzilla Wallin and Dillard Chandler.

Mick

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LOVE HAS BROUGHT ME TO DESPAIR

My father he was a rich old jade
My mother she was a lady fair
And me a-bein' the only heir
So love has brought me to despair.

It's when I wore my long silk gown
He followed me from town to town.
But now my apron just will tie,
He passes my door, and he won't stop in.

There is a street in yonders town
Where my true love walks up and down.
He takes another girl on his knee
And tells to her what he won't tell me.
He takes another girl on his knee,
Oh ain't it a awful grief to me.

There is some flowers I've heard them say
That would cure false love both night and day.
And of these flowers I did pull
Until I got my apron full

I gathered black, I gathered blue,
But none of these flowers could I find
that would cure false love or ease my mind

It's out of these leaves i made a bed
And out of these flowers a pillow for my hear
It's down she lay a nary a word she spoke
Until her aching heart was broke.

And in the green meadows round
I thought i heard a doleful sound


Source: Berzilla Wallin, youtube - Love has brought me to despair