I Am Looking for Info and John and Mary Murchland Who Lived on OR Maybe Immigrated to Prince Edward Island Canada

There were a lot of Murchland on PEI but John and Mary only had 2 sons. John born 1837, James born 1838. The family would love to know where their parents came from and when.They would have been born around 1815.James stayed on the island and John went to Victoria, Australia.