I'm 77 years old. My mama sang this when I was a little kid. This is her version

Once an old woman had a little pig, hum, hum, hum
Once an old woman had a little pig
Didn't cost much,for he wasn,t very big, hum, hum, hum

This little pig didn't do no harm, hum, hum, hum
This little pig didn't do no harm
They petted the little thing all around the farm, hum, hum, hum

But this little pig got sick and died, hum, hum, hum
This little pig got sick and died
The old woman sobbed and sobbed and cried, hum, hum, hum

The old woman sobbed and sobbed and cried, hum, hum, hum
The old woman sobbed and sobbed and cried
Then she laid right down and died, hum, hum, hum

The old man died on the account of grief, hum, hum, hum
The old man died on the account of grief
Now wasn't that a great relief, hum, hum, hum

There they lay the only three, hum, hum, hum
There they lay the only three
The old man, old woman and the little piggy, hum, hum, hum

There they lay upon the shelf, hum, hum, hum
There they lay upon the shelf
If you want anymore you can sing it yourself, hum, hum, hum