Searching for descendants of Robert Johnston, Esq. and Catherine Dick (m. ca 1848) in Church of Ireland, Co. Tyrone. Robert was from Cashel House, and the couple lived near Drumragh, Co. Donegal. They had the following children:
Robert George, John Wybrandt, Helena, and Thomas. It is believed John may have migrated to America. Helena lived with her uncle and aunt when she was a young woman (Sir James Nicholas Dick, and wife Lady Elizabeth Beveridge) in England.