Firstly, have you checked the Surnames Interest Table, here on RootsChat?
Scroll to the bottom of ANY RootsChat page where, in the dark brown box, you will find a link for "Surname Interests".
Secondly, I live on the Isle of Man

What information did you want to find?
Marriage was at Braddan, 26th February 1820.
Both Of This Parish; married by licence.
Image of the Parish Register entry is in FamilySearch.
Children:
William Barr, baptised 28 January 1838 at Kirk German, son of James Barr and Ann Grigger.
William Barr, baptised 30 August 1827 at Kirk German, son of James Barr and Ann Grigges.
Judith Barr, baptised 15 September 1822 at Kirk German, daughter of James Barr and Ann Grigges.
William Barr, baptised 10 April 1836 at Kirk German, son of James Barr and Ann Grigger.
Sarah Barr, baptised 17 December 1831 at Kirk German, son of James Barr and Ann Grigger.
Mary Ann Barr, baptised 6 May 1821 at Kirk German, son of James Barr and Ann Grigges.
John Barr, baptised 2 May 1829 at Kirk German, son of James Barr and Ann Grigger.
Judith Barr, baptised 23 November 1823 at Kirk German, daughter of James Barr and Ann Mc Greggor.
William Barr, baptised 10 April 1836 at Kirk German, son of James Barr and Ann Griggor.
William Barr, baptised 16 January 1825 at Kirk German, son of James Barr and Ann Grigger.
Again, all on FamilySearch.