please help me to translate a poet !!!! please

of the service it'sself I need to say no more ,
for well you will know tittle was wanting .
another noise and a new was well_night at hand ,
that the lord might have leave his life to nourish;
for scarce were the sweet strains still in the hall,
and the first coursw come to that company fair ,
there hurtles in at the hall_door an unknow rider,
one the greatest on ground in growth of his fraim:
from broad neck to buttocks so long and so great ,
half a gaint on earth I hold him to be ,
but believe him no less than the largest of men ,
and that the seemliest in his stature to see , as he rides ,
for in back and in breast though his body was grim,
his waist in its width every feature in fair accord
was he ,
great wonder grew in hall
at his hue most stange to see,
for man and gear and all
were green as green could be .