In the LDS microfilm of British Subjects in Samoa no 1130493 it lists the following people;
all listed on July 11, 1896
Mrs Maria Leutogi ROCH, born Samoa,married by Father Remy 16 Jan 1887, copy of marriage certificate lodged in(British) Consulate.
Esperanza Luisa ROCH, born Matafele,Nov 18,1887;daughter of Frank ROCH and Maria.
Francisco Gillermo ROCH born Faleasiu, April 24 1889 son of Frank Roch and Maria
Silveria ROCH born Faleasiu March 28 1896, daughter of Frank and Maria ROCH
- note by Thomas Trood- British Consul- (In the Roman Catholic Register of Births she is stated to have been born on 28 March 1891, which is probably correct)
John Sebastian ROCH, born Faleasiu,Oct 13,1894.son of Frank and Maria ROCH
It would appear that Frank Roch was dead by July 1896, as there is no mention of him. He presumably was British, as they are all registered as British subjects at the British Consulate. The couple married in the Catholic church, so he may have been Irish rather than English.
Note the spelling of ROCH.