Hugh Johnston was born circa 1887 to William Johnston and died 1920 Balmain South, New South Wales of unspecified causes. He married Mildred Pearl Nelson (1887-1973) 27 December 1910 in Balmain South, New South Wales.
Children
| Name | Birth | Death | Joined with |
| Hugh Johnston (c1910) | 1910 New South Wales, Australia | ||
| Ivy Johnston | |||
| Norman William Johnston | |||