For this Konstantin Sergeevich there are 2 different names on Yasni.
In the ranking of the most common first names Konstantin Sergeevich is on position 4589.
Male first name (German, Russian, Hungarian, Bulgarian): Constantine, the Steadfast, Latin (Roman epithet); constare = stand up, by a Roman nickname of 'Constantine' back, spread by the name of the Roman Emperor Constantine the Great (3rd / 4C)
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