Family Tree:

Olga - From Russian name Olga which comes from Old Scandinavian helge "sunny", "light", "bright". It is in use in Armenia since XIX c. also in the diminutive form Olichka. It is the female variant of the name Oleg. It is in use now.
Hovannisyan - Hovhannisyan or Hovannisyan is an Armenian surname meaning "son of Hovhannes", the Armenian equivalent of John, thus making it equivalent to Johnson.