Interbred considerably.
To keep the bloodline 'pure'.
she married him to keep their blood line pure
Due to incest to keep the blood line pure
"Kayla" does not have a direct translation in Russian, as it is not a Russian name.
You need to define pure blood.
A royalty, and its not really a commission in the pure sense.
The child of a half-blood and a pure-blood would be considered a half-blood. In the wizarding world, blood status is often determined by the least pure parent.
The name Karina means PURE.=It is a Russian name.=
Astoria Greengrass is a pure-blood.
Svetlana is a very common Russian name, Svet meaning "light" or "pure"
The child will be half-blood. A person can only be pure-blood if both parents are pure-blood, similarly, they can only be muggle-born is both parents are muggles. Otherwise they are half-blood.
Pure As the Blood Covered Snow was created in 2003.