- Father: John RETALLACK
- Mother: Caroline RASHLEIGH
- Birth: 20 JUL 1854, Mitcham, South Australia
- Death: 19 JUL 1939, Korunye, South Australia
- Burial: Kadina, South Australia
- Partnership with: Sarah CONSTABLE
Marriage: 22 DEC 1875, Weslyan Parsonage, Norwood, South Australia
- Partnership with: Ruth GREATOREX
Marriage: 25 MAR 1897, Caurnamont, South Australia
Ancestors of Seth RETALLACK
/-John RETALLACK
Seth RETALLACK
| /-John RASHLEIGH
| /-John RASHLEIGH
| | \-Margaret ALLEN
\-Caroline RASHLEIGH
\-Phillis SYMONS
Descendants of Seth RETALLACK
1 Seth RETALLACK
=Sarah CONSTABLE Marriage: 22 DEC 1875, Weslyan Parsonage, Norwood, South Australia
2 John Thomas RETALLACK
=Sarah Elizabeth PRATT Marriage: 14 OCT 1903, Lower Light, South Australia
3 Elsie May RETALLACK
=James George OLLEY Marriage: 25 OCT 1930, Collinswood, South Australia
3 Doris Sarah Hannah RETALLACK
=Walter Lewis THOMPSON Marriage: 6 APR 1940, Lower Light, South Australia
3 Maurice Hedley RETALLACK
=Mavis Jessie Matilda O'BRIEN Marriage: 20 JUN 1942, North Adelaide, South Australia
2 Alexander RETALLACK
=Anna Maria KUNZEL Marriage: 1904, Wagin, Western Australia
3 Linda Clark RETALLACK
3 Gladys Rita RETALLACK
=Thomas RUSSELL Marriage: 9 NOV 1929, Perth, Western Australia
3 Arthur Augustus RETALLACK
=June I GASCOIGNE Marriage: 1952, Perth, Western Australia
3 Myrtle Elizabeth Retallack RETALLACK
=Ronald George FOWLER
=John Joseph JEFFREY Marriage: 1939, Perth, Western Australia
3 Ernest Edgar RETALLACK
=Phyllis Emily HAINES Marriage: 28 DEC 1940, Toodyay, Western Australia
3 Edith Victoria RETALLACK
=Albert PAULL
=Kees BESSELL
=Edith Urline MITCHELL Marriage: 1945, Perth, Western Australia
2 William Charles RETALLACK
=Lilly Eleanor STACEY Marriage: 5 OCT 1904, St Andrew's Presbyterian Church, Gawler, South Australia
3 Edward Roy RETALLACK
=Jean Paulina Ann FISHER Marriage: 7 SEP 1940, Renmark, South Australia
4 Margaret RETALLACK
= GRINTER
3 Ruth Margaret Sarah RETALLACK
=Vivian Cyril RAKE Marriage: 18 SEP 1937, Methodist Church, Kersbrook, South Australia
3 Stanley William Alexander RETALLACK
=Gloria KEMP Marriage: 1 NOV 1947, Athelstone, South Australia
4 Rosslyn June RETALLACK
3 Sylvia Joyce Maud RETALLACK
=Claude Leslie MILES Marriage: 6 OCT 1945, Presbyterian Church, Gawler, South Australia
2 Walter James RETALLACK
=Ruth GREATOREX Marriage: 25 MAR 1897, Caurnamont, South Australia