The earliest reference I know of is the song "Rake and a Rambling Boy", done by Joan Baez in one of her first few albums.

The verse:

"Oh, when I die,
Don't bury me at all.
Just place my bones
in alcohol.
And at my feet,
Place a turtle dove
Let the whole world know,
I died of love."

Obviously, this couplet is a floater.


A