| Father | Samuel Herbert Milligan (1882 - 1963) |
| Mother | Cecilia Agnes Armstrong (1882 - 1961) |
| Sibling | Eva Elizabeth Milligan (1905 - 1987) |
| Sibling | Francis Samuel Milligan (1908 - 1979) |
| Sibling | Vera Marion Milligan (1910 - 1976) |
| Sibling | Lawrence Donald Milligan (1912 - 1971) |
| Sibling | Dorothy Isabel Milligan (1914 - 1982) |
| Sibling | Robert Donald Milligan (1915 - 1916) |
| Sibling | Howard Armstrong Milligan (1917 - 1965) |
| Sibling | Donald Irwin Milligan (1918 - 1944) |
| Sibling | Ruth Elinor Milligan (1919 - 1994) |
| Sibling | Margaret Cecilia Milligan (1923 - 1995) |
| Sibling | Maynard Melvin Milligan (1925 - 1970) |
| Sibling | Living |