For this Olga Dalia there are 2 different names on Yasni.
In the ranking of the most common first names Olga Dalia is on position 4589.
Female first name (Russian): Olga, holy, Old Norse (Word format); heilagr = holy, in Germany only in use since 1900
Female first name (German, English): Dalia, Dahlia, German (plants), and the Dahlia, use of the name of the flower as a first name, the dahlia is named after the famous Swedish botanist Anders Dahl (18th century), the family name of the botanist Dahl is related to the name 'Dale'