Lera Henkel asked me: “Can you translate the Russian name Gaydamak into English?”
Gaydamak is not exactly Russian: It came to Russian from Ukrainian, and it came to Ukrainian from Turkish.
The original Ukrainian word is more correctly spelled “Haydamak” in Latin letters, but in case of Mr. Arcadi Gaydamak the custom is to write it with a ‘G’.
For information about who were the original Ukrainian Haydamaks, see the Wikipedia article Haidamaka, which appears to be pretty good.
Aharoni in Unicode 