Dunbar Robertson Family

GEORGE LOUIS ROBERTSON WAS BORN DUNBAR 18-7- 1877 AT BOWEN QUEENSLAND HE HAD A BROTHER WILLIAM MICHAEL FRANCIS DUNBAR BORN 21-4-1880 AT BOWEN QUEENSLAND HE MARRIED ELSIE BALERSON THEIR MOTHER WAS MARGARET HOUGHTON SHE MARRIED GEORGE DUNBAR IN APRIL 1876 AT THE CAPE DIGGINGS NEAR CHARTERS TOWERS QLD GEORGE WAS A STOCKMAN ON LOLWORTH STATION AT THE TIME OF THEIR MARRIAGE
SOME TIME AFTER THE BOYS BIRTH GEORGE DUNBAR (THE FATHER )DISSAPEARED
WHAT HAPPENED TO GEORGE DUNBAR ( FATHER ) ALSO MICHAEL DUNBAR HE CHANGED HIS NAME TO ROBERTSON WHEN HE MARRIED ELSIE WHERE DID HE END UP ?