Olsufiev

Olsufiev (Olsoufiev):  ОЛСУФЬЕB

On a Maltese Cross arg and encircled by the collar of the Order of St John with its pendant:
Per fess gu two cartwheels or; and argent.²
On a chief gu a cross arg.  

The Olsufiev Family Achievement²

Sources (Blazon):

1. Rietstap, J.B.: ARMORIAL GÉNÉRAL [2éme ed., G.B van Goor Zonen, Gouda 1884]

2. Mandrich, Donald R. & Placek, Joseph A.: Russian Heraldry and Nobility [Dramco Publishers, Boynton Beach, Florida 1992]

3. Unattributed