Dahl's at Gotland

[Raimo Dahl]

Hi,
 
I wrote to my fathers cousin and she wrote back to me and told  
a story that she had heard from her grandmother.
Her grandmother has told  to her that our family roots are from  
Sweden (Gotland).  
I've been searching my roots here in Finland and latest ancestor  
now is Erich Henricsson Dahl born 1716 somewhere.
He lived at Perniö (Bjärnå), Kirjakkala. Now, I would like to know,  
if anyone has seen Henrich or Erich Henricsson Dahl named  
mens at Gotland?
Is it common name at Gotland?
 
- Raimo Dahl