This is the intro part to the song and also the part that is played in between verses.  These are the main notes for these parts? there are also some little ones in there you may want to fool around with to try to get.  I think its right, but this is the first tab I?ve ever done so if it?s not I apologize. 
Let me know what you think at libs1702@hotmail.com. 
 
Intro: Part1, Part2 
 
Verse one finishes, then play: Part2 
 
After the Chorus(?my Mary?s sweet cot in my eye.) play: Part2, Part3 
 
After second Chorus (?She stems thy clear wave.) play: Part4 
 
After the last verse play: Part2 
 
 
 
 
Part1: 
e|----12--12--12--12--12--11--7--2--4--5--7--9--7--7---| 
B|-----------------------------------------------------| 
G|-----------------------------------------------------| 
D|-----------------------------------------------------| 
A|-----------------------------------------------------| 
E|-----------------------------------------------------| 
 
e|--0--2--4--5--4--2--0--------0--2--0--0--------------| 
B|-----------------------0--2--------------------------| 
G|-----------------------------------------------------| 
D|-----------------------------------------------------| 
A|-----------------------------------------------------| 
E|-----------------------------------------------------| 
 
 
 
Part2: 
e|--9--11--12--12--12--12--11--7--2--4--5--7--9--7-----| 
B|-----------------------------------------------------| 
G|-----------------------------------------------------| 
D|-----------------------------------------------------| 
A|-----------------------------------------------------| 
E|-----------------------------------------------------| 
 
e|--0--2--4--5--4--2--0--------0--2--0-----------------| 
B|-----------------------0--2--------------------------| 
G|-----------------------------------------------------| 
D|-----------------------------------------------------| 
A|-----------------------------------------------------| 
E|-----------------------------------------------------| 
 
 
 
Part3: 
e|--9--11--12--12--12--14--7--7--17--16--12--7--4----| 
B|---------------------------------------------------| 
G|---------------------------------------------------| 
D|---------------------------------------------------| 
A|---------------------------------------------------| 
E|---------------------------------------------------| 
 
e|--0--2--4--5--4--2--0--------0--2--0----| 
B|-----------------------0--2-------------| 
G|----------------------------------------| 
D|----------------------------------------| 
A|----------------------------------------| 
E|----------------------------------------| 
 
 
 
Part4: 
e|--9--11--12--12--12--12--11--7--2--4--5--7--9--7--7--| 
B|-----------------------------------------------------| 
G|-----------------------------------------------------| 
D|-----------------------------------------------------| 
A|-----------------------------------------------------| 
E|-----------------------------------------------------| 
 
e|--0--2--4--5--4--2--0--------0--2--0-----------------| 
B|-----------------------0--2--------------------------| 
G|-----------------------------------------------------| 
D|-----------------------------------------------------| 
A|-----------------------------------------------------| 
E|-----------------------------------------------------|