David Keith Ballow

On 21 October 1837, in Sydney, he married Catherine Campbell, the youngest daughter of Captain D. McArthur, of the 2nd Royal Veteran Battalion.

Ballow and his wife arrived in Brisbane as it transitioned from being a penal colony to a free settlement.

Initially Dr Mallon came from Brisbane to care for the quarantined patients at Dunwich but he too contracted the infection.

He put his tent on Bird Island, visiting his patients as required from there and managed to avoid catching the disease.

A white marble memorial tablet was also placed in St John's Cathedral in Brisbane.