He was the final British governor of Heligoland , departing on 9 August 1890 after sovereignty over Heligoland had been passed to Germany via the Heligoland -- Zanzibar Treaty .
In 1888 , Barkly became the Governor of Heligoland .
Barkly was the final British governor of Heligoland , departing on 9 August 1890 after sovereignty over Heligoland had been passed to Germany via the Heligoland -- Zanzibar Treaty .
In 1888 , Barkly became the Governor of Heligoland .