King William Was King James's son,
King William Was King George's son,
Cock Robin is dead and lays in his grave,
There came 3 gypsies riding,
There were 2 Jolly Sailor boys
and
all the others except "The Roman Soildiers or The Irish Soldiers" can be found in The Singing Game by Iona and Peter Opie. Or have you already seen that? I have the book if you want any more detail.

Noreen