Henriette Virginie Williem Yvois was born in Paris, France on 22 April 1889.
She was the daughter of Modest Henry Theobad Yvois (b. 1860), a restaurant worker originally from Vézannes, Yonne, and Maria Ann Williem (b. 1867), a florist from Brussels, Belgium.
Her parents married after her birth in 1891 and she had a younger brother, René Émil Henri (1891-1952).
Henriette, a model, lived at 5 Rue des Pyramides Paris. She boarded the Titanic at Southampton as a second class passenger (ticket number 248747, which cost £13) and it appears that she travelled together with the film maker William H. Harbeck (ticket number 248746); there is speculation that they were lovers but there may be a more innocent explanation. It would appear that they were the couple observed playing cards for much of the journey by Lawrence Beesley.
"In the opposite corner are the young American kinematograph photographer and his young wife, evidently French, very fond of playing patience, which she is doing now, while he sits back in his chair watching the game and interposing from time to time with suggestions. I did not see them again."
Henriette Yvois died in the sinking and her body, if recovered, was never identified. Harbeck, who also perished, later had his body recovered from the ocean and among his possessions was a lady's purse which was later identified as belonging to Miss Yvois.