Billy,
I too am a great fan of Harry Clifton. Do you have any of his sheets?
I came to him through 'My Rattling Old Black Mare' which I collected orally in the 60s and since have come across several of his songs in oral tradition, more than anybody else's from the early music hall.
Rocky Road to Dublin (Though he didn't write it)
Send back my Barney (The original of My Bonny)
Polly Perkins
Lannigan's Ball
Paddle your own Canoe
Where there's a will there's a way (Still sung round Sheffield)
Calico Printer's Clerk
I am one of the Olden Time (Mukram Wakes)
On Board of the Kangaroo
Water Cresses
Waterford Boys
The Weepin Willer

I paid the most I've ever paid for a piece of sheet music to get 'Rattling Old Black Mare'

I also have more than a passing interest in the early burlesques of trad ballads like Lord Lovel, Barbara Allen, Ah my Love's Dead, Villikins etc. and the songs of J B Geoghegan who wrote 'Hey John Barleycorn' and 'Ten thousand Miles away' among others we still sing.