The song is "Spanish Ladies" and the author's name is lost to
history...
"Farewell and adieu to you Spanish Ladies
Farewell and adieu to you Ladies of Spain,
For we've received orders to sail for old England,
And we hope in a short while to see thee again."
This is an old sea shanty, or capstan song which was modified a
bit to be "Boston Ladies" for the film "Jaws" as sung by Robert
Shaw as Quint.