I am trying to find any record of the death of Margaret Aird, last appearing in 1841 census in Whitletts, St Quivox, along with her mother, Marion Neil, and half-brother, James McGrigor. She had a daughter, Helen (my great grandmother), with Thomas Fitzimons probably about 1844 but I can find no trace of her after 1841. Perhaps she died in childbirth? Any help would be hugely appreciated.