In 1926 the Cameron family applied for British passports in Tonga to go to Sydney.
They were;
Clara Elizabeth Cameron nee Cocker born Nuku'alofa 5 march 1885;
Alexander W Cameron, born London 21 July 1873;
(Truda Kekela Winton Cameron aged 14 therefore born abt 1911;
(Alexander Donald Cameron aged 12 " " " 1913;
(Evan Percival Winton Cameron aged 7 " " " 1918;
(Dugald Ian Winton Cameron aged 5 " " " 1920;
all on mother's passport application
Robert Marshall Winton Cameron aged 16 " " " 1909
(entry crossed out) - born Nuku'alofa- own application
Elizabeth Esther Winton Cameron born 21 Dec 1903 Nukualofa
- own application
In 1923 Muriel Margaret Winton Cameron,born 17 August 1905 in Eua,Tonga, father born in Tottenham, London 21 July 1873, applied for a passport to go to Apia.
In 1927 Muriel Margaret MacKay nee Cameron & her husband Robert Louis MacKay born Edinburgh, with their 2 children applied for passports to go to Samoa.
In 1930 Evelyn Dorothy Winton Dalton nee Cameron born 6 August 1907 in Nuku'alofa applied for a passport to go to Sydney for her health.
I hope these dates help.
Christine