Sarah is pronounced the same in Russian as it is in English, but it's spelled Сара.
This how we usually write it Клэр and spell it [kler], spelling the same as in English.
Equivalent in Russian you may use also (Клэр, Клара (full form Кларисса), Кьяра, Клер).
Мария.
Margarita.
Dimitri
Stacey
The Russian equivalent of the English name David is "Давид" (pronounced Dah-VEED).
Джудит Dzhudit
The Russian equivalent of the English name Rebecca is Ребекка (Rebekka) or Рахиль (Rakhil).
The Russian equivalent of the name Michelle is Мишель (Mishel).
I can find no Welsh equivalent for the name "Claire'.
Клиффорд. Pretty much a direct translation of the name.
Ekaterina is a Russian girl's name meaning "pure". The name is also used in Bulgarian and Macedonian languages. It is equivalent to the English name Katherine.
They are "blintzes". Or at least, this is the Russian equivalent of a English pancake/crepe. (i.e they are not think, unlike the American pancake).
Claire is equivalent in meaning to the name Akiko (晶子).You can also spell Claire phonetically as クレール (Kurēru)
Jane