On Prince Edward Island church of Nova Scotia , formed on nth October, 1821, and held its first meeting in the house of Archibald Campbell , Esq., Lot 16 , and consisted of Rev. John Keir , moderator, Robert Douglas , the grandfather of Professor Falconer , of Halifax , William McGregor , ministers, and Mr. Edward Ramsay , ruling elder. Mr. Douglas was clerk of the first Presbytery of Prince Edward Island . 19