Is the female given name "Tatiana" originally Russian, or Greek?

[Merida]

Marina was the daughter of the moon and sun in slavic mythology

That's really nice actually!

[Guapo]

Probably Russian, I can't think of any 'tati' Greek morphemes…

Tatiana means daddy's girl in slavic languages. tata is dad in slavic, you should know that being a Pole.

[Guapo]

http://en.wikipedia.org/wiki/Olga_of_Kiev

Not very saintly, but she did start the christianisation of the Rus, albeit under the threat of byzantine arms. A byzantine princess was also named after her later.

The H is silent in Helga. My sister is named Olga.

[Bloodnigger]

The H is silent in Helga. My sister is named Olga.

So is my aunt :3

[Guapo]

So is my aunt :3

I've met a few Greek Olga's too, Slavic stronk

[Bloodnigger]

I've met a few Greek Olga's too, Slavic stronk

She is

Spoiler!

Russo-pontic without the pontic part

but don't tell Sikeliot

[Guapo]

That's really nice actually!

The moon and sun are the parents of the earth. Marina, is the the sea.The moon shines on his daughter at night and the sun shines on her daughter during the day. Danica is their other daughter, she is the bright star beside the moon, her father.