Are you still looking for this info? The Polynesie archives were partially put on-line recently so here's your answer: http://www.etatcivil.gov.pf/fiche_edit.php?id=AWIHNFEyADtQZA
Ernest Charles RICHARDS
b. January 19, 1887 04:00 pm in Papeete
Son of William Edward RICHARDS, minister aged 29, domiciled in Raiatea (Iles sous le Vent) but at the moment in Papeete, and of Elisabeth VRAGG?, his wife, no occupation, aged 24.
Witnesses: 1) Charles PICHAT, President of the Imperial Council of the Tahitian Churches, Knight in the order of the Legion of Honour, aged 47
2)Francis William WALTER, merchant, aged 49; both residing in Papeete