Please Help Me Find These Lyrics!

I'm looking for the words to a childrens song or poem that my Grandfather used to sing to my Mother and then later, to me. I'm hoping someone can help...I will post the words I know and if you've heard it before or know of it, I would LOVE to hear from you...
please remember that these words could be totally mixed up but I'm posting them as my memory permits..


Pa, he got him a great big Billy Goat,
Ma, She washed most every day,
She Hung the wash out on the line
and the gosh darn goat he came
that way!

Now I know darn well there have to be more verses to the song. My mother can't remember them either.

Song

When I am dead, my dearest,
Sing no sad songs for me;
Plant thou no roses at my head,
Nor shady cypress tree:
Be the green grass above me
With showers and dewdrops wet;
And if thou wilt, remember,
And if thou wilt, forget.
I shall not see the shadows,
I shall not feel the rain;
I shall not hear the nightingale
Sing on, as if in pain:
And dreaming through the twilight
That doth not rise nor set,
Haply I may remember,
And haply may forget.
- Christina Georgina Rossetti , 'Song', published 1862"