Here is one that mentions Robin hood and summer coming in HAL AN TOW

Take no scorn to wear the horn
It was the crest when you were born
Your father's father wore it
And your father wore it to

Hal an tow, jolly rumbalo
We were up long before the day o
To welcome in the summer
To welcome in the may o
For summer is a comin in
And winter's gone away o

Robin Hood and Little John
Have both gone to the fair o
and we will to the merry green wood
To hunt the buck and hare o

What happened to the Spaniards
Who made so great a boast o
It's they shall eat the feathered goose
And we shall eat the roast o

And as for that good knight, St. George
St. George he was a knight o
Of all the knights of Christendom
St. George is the right o

God bless Aunt Mary Moses
In all her power and might o
May she send peace to England
Send peace by day and night o

Recorded by Watersons on Frost & Fire; by Shirley Collins on No Roses;Steeleye Span
The Oyster Band on Step Outside and others

From the DT
Regards Ted