Looking for info on a Mary AITKEN who married a John LECKIE in Ballantrae 1840. Mary born Ballantrae about 1821 and John born about 1815-20. They came to Australia in 1853 with children - Hugh - age 4 - [my g-grandfather] and Alexander, Rachel?, Jane? They are listed on my ggfather's death cert. but it seems they returned to Ballantrae in 1869 via London. Any help appreciated.