Searching for the family of David Mcarthur and Mary Morton who married in Glasgow in 1838. Children David born 1839 Agnes 1841, Ann 1843 and Mary 1845. David died in 1873 on board ship to or from Australia, Agnes emigrated to South Australia in 1859 and Mary to NSW in 1860s. Mary died in 1849 and David married Janet Ferguson who had a daughter Margaret in 1837. She was a widow. They disappear off the census after 1861 and may have emigrated to the US or Canada with daughter Ann. I did find three entries for a David, Janet and Ann Mcarthur in the US records but were unable to follow up as I don't have access to records. Any one out there who has these people in their family?