Mary Johnston (?–?)
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- Johnston, George Horatio (husband)

- Johnston, Frances (mother-in-law)

- Johnston, Robert (father-in-law)

- Dickinson, Penelope Brooks (sister-in-law)

- Johnston, Catherine (sister-in-law)

- Johnston, Eliza Christina (sister-in-law)

- Murray, Frances Gordon (sister-in-law)

- Johnston, Amanda Gadsden (sister-in-law)

- Johnston, Ellen Mary (sister-in-law)

- Johnston, Eliza (sister-in-law)

- Dickinson, Samuel (brother-in-law)

- Murray, George Alexander (brother-in-law)

- Johnston, Robert Percival (brother-in-law)

- Johnston, Algernon (brother-in-law)

- Johnston, Leslie Norman (brother-in-law)

- Johnston, Percival (brother-in-law)

- Johnston, Bruce David (brother-in-law)

- Johnston, Edward Charles (brother-in-law)

Citation details
'Johnston, Mary (?–?)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/johnston-mary-26070/text, accessed 4 October 2023.