just use these basic chords

G
D
Em ( 3 3 0 2 2 0 )
C ( 3 3 0 2 3 0 )

put a capo on the 2nd fret

song starts with picking , i think you can play around to figure it out . i think
it’s something like this

E – – – – – 3 – – – – – – |
B – – – – – – 3 – – – – |
G – – – – – – 0 – – – – | – – > and repeat this . . . this is basically it .
D – – – 0 – – – – – – – |
A – – – – – – – – – – – |
E – – 3 – – – – 3 – – – |

G
here we come A – wassailing among the leaves so green ,
here we come a wandering so fairly to be seen

( walk down on A – string 3 – 2 – 0 during these chords )
Em D C – Em D
here we come A – wandering so fairly to be seen .

chorus
G
love and joy come to you and to you our wassail too ,
Em D G C
god bless you and send you a happy new year ,
G D G
god send you a happy new year .

( now verse and chorus the same as above )

we are not daily beggars ,
that beg from door to door ,
but we are neighbours children ,
that youve seen before .
we are neighbors’ children ,
that youve seen before .

. . . .
G D G – C ( change the strumming pattern according to the song )
god send you a happy new year .

G C G D
i have a little purse its made of leather skin ,
G C G D
i need a silver sixpence , to line it well within .
Em D C Em D ( walk down the A – string again )
i need a silver sixpence , to line it well within .

chorus

instrumental
C Em D ( 3x )
C D
C Em D ( 3x )
C D

( chords as above )

god bless the master of this house ,
and then the mistress too ,
and all the little children ,
that ’round the table grew .
and all the little children ,
that ’round this table grew .