There is no such person Pasha Grischuk.
Oksana Grischuk, the well known ID skater turned coach, once mentioned in her interview she adores her grandma (Praskovija [Paraskeva in Greek], aka Pasha) so much that though to change her 1st name once. Journalists had understood the wrong way and someone changed her registry in IOC/ISU, so she skated under the name Pasha in 1998.
In Russian the name Pasha is shortened version of the male name Pavel (like Paul).
Lusterfan mentioned in an earlier post that Pasha Grischuk’s name was Oksana.
One of Gracie‘s coaches is Pavel “Pasha” Filchenkov, who coaches at IceWorks. He was an ice dancer for the US and was born in Russia.