If directed here from the Nordic Noble Surname Project the name Rubzoff refers to the following.
Capten Carl Gustaf Rubzoff was naturalized to the Swedish nobility in 1723, under n:o 1773. This branch of the family ended already in 1739.
The name Rubzoff is one of the most famous names in the history of Swedish bayors or boyars as in Swedish referring to Russian noblemen in general, and particularly a group of Russian noble families who had entered Swedish service in the late sixteenth–early seventeenth centuries and were incorporated into the Swedish nobility.