I wonder if any of these might be the missing Elizabeth Leedham?

Marriages registered in New South Wales from 1788 - 1959

Registration Number, Groom's Surname, Groom's Given Name(s, Bride's Last Name at Time of Marriage, Bride's Given Name(s), District.

2629/1883, DAVIS JAMES, LEEDHAM ELIZABETH JANE, NEWTOWN
3244/1898, O'BRIEN PATRICK, LEEDHAM ELIZABETH M, DUNGOG
3244/1898, OBRIEN PATRICK, LEEDHAM ELIZABETH M, DUNGOG
21869/1957, KUSAK FRANTISEK, LEEDHAM JACQUELINE ELIZABETH M, SYDNEY

Cheers,

Don Cameron.