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
You need to define pure blood.
"Kayla" does not have a direct translation in Russian, as it is not a Russian name.
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.