Here's an excerpt from a short biography of Olivier Martinez I found on a Spanish movie site. It's nothing major, but we get a little more info about Olivier's mother, and his height, assuming the information is correct. (I didn't bother to translate the rest of the bio because it's information that has already been covered elsewhere.)

Original text: Mide 1'71. Su padre es mec�nico (tambi�n prob� suerte como boxeador) y su madre secretaria. Su abuelo es de origen espa�ol, m�s concretamente de Andaluc�a.

Translated: Height: 1m71 (which would be about 5'6"). His father is a mechanic (who also had success as a boxer) and his mother a secretary. His grandfather is of Spanish origin, from Andalusia, more specifically.