Looks like 2 other kids were born elsewhere as well.
The Sydney Morning Herald (NSW : 1842 - 1954)
Saturday 18 June 1938
HASKELL. -June 11, 1938 at his residence, 57 Gibbons Street Redfern, Edward Henry, aged 73, beloved husband of Margaret Haskell and beloved father of Edward, Jack, Olive, William, May, Sidney, and Arthur. At rest.
4778/1894 HASKELL OLIVE B EDWARD MARGARET J BALMAIN NORTH
9343/1897 HASKELL WILLIAM F W EDWARD H A A MARGARET J SYDNEY
18731/1901 HASKELL WALTER S M EDWARD H A A MARGARET J SYDNEY
18387/1903 HASKELL ARTHUR T EDWARD H A A MARGARET SYDNEY
9253/1899 HASKELL ALICE M EDWARD MARGARET J SYDNEY
Looks like Walter was known as Sydney so only one other birth elsewhere
29124/1953 HASKELL WILLIAM HENRY W EDWARD HENRY A A MARGARET JANE HURSTVILLE
17551/1944 HASKELL WALTER SIDNEY EDWARD HENRY MARGARET JANE KOGARAH