Based on @realDSteinberg’s excellent research six years ago, Ilhan Omar is not her real name.
Her father changed their names on their applications to get asylum to come to the U.S. in 1995.
Nur Said Elmi Mohamed became Nur Omar Mohamed
Ilhan Nur Said Elmi became Ilhan Abdullahi Omar
Sahra Nur Said Elmi became Sahra Noor
This is the basis of the immigration fraud.