Please help find old song

Can someone please help I'm trying to find the song to these words??

They use to call him slippery when he first joined the show, but they changed his name to mandrake for there's no trick he don't know, he tries a new one everynight he never bucks the same for old mandrake was a wizzard so that's how he got his name.
Screw down the saddle, make it good and tight, back from the ropes boys, ask him is he right.

This is a very old song that was sung to my partner when he was little and not sure if the words are in correct order or not.

PLEASE HELP

I too had this song sung to me by my father who died a couple of years ago, but I kind of remember a couple of verses although I may have them muddled:

" There was a fellow from out east came right up to the chute, and said I'll ride your outlaw if the saddle you'll allow, we legged him on the outlaw his height was 6' 4", he landed on his head and now he's five foot and no more"

"There was a fellow from out west came right up to the chute, he had a fancy saddle and a pair of fancy boots, we legged him on the outlaw he thought he was a cinch, we used his boots and saddle 'cause we haven't seen him since"

My grandfather used to love this song before he died. The words as i remember them are;

I told you of Aristocrat and good old Rocky Ned,
Their names will be remembered long after they are dead,
They've thrown the best of riders the greatest of all time,
But now id like to tell you bout this stallion of mine

They used to call him slippery when he first came to the show,
but they changed his name to Mandrake 'coz theres no trick he don't know,
He tries a new one every night, he never bucks the same,
Mandrake was a wizard that's how he got his name.

Screw down the saddle, make it good and tight,
Back from the ropes boys, ask him is he right.
Pick up your mate lads he's had a nasty fall,
They're all the same to Mandrake champions and all.

A fellow came in the other night to show what he could do,
He thought that he's be funny so he painted his pants with glue,
Mandrake threw him easily, he said "Ha! I don't mind!",
I said 'You take a look at yourself! You've left you pants behind!".

Screw down the saddle, make it good and tight,
Back from the ropes boys, ask him is he right.
Pick up your mate lads he's had a nasty fall,
They're all the same to Mandrake champions and all.

There was a fellow from out east came to show how he could ride,
He said I'll ride your outlaw if the saddle you'll allow,
We legged him on the outlaw his height was 6' 4",
He landed on his head and now he's five foot and no more,

There was a fellow from out west came right up to the do,
He had a fancy saddle and a pair of cowboy boots,
We legged him on the outlaw he thought he was a cinch,
We used his boots and saddle 'cause we haven't seen him since


Ill try to remember more and post them when i find them.