Judy, My father-in-law has a family bible dating originally from 1822 which makes reference to:
"Isaac Randell (or Randall) was born 29th March 1841 at Muckleford in the Parish of Bradford Peverell in the County of Dorset and registered in the same parish church. Married 29th December 1861 (or 1862) to Elizabeth Legg at Greenwch Old (?) Church. Died on September 10 1864 at Ireland's(sic) Island Bermudas W.I.
Much of this data I've been able to verify from within UK, and also his christening on 25 April 1841.
I should be very grateful if you could find any records of either Isaac or his wife in the Bermuda's around this time and of course, in particular, his untimely death.