Originally Posted by CyrilVladisla
Ileana and Anton married in a Roman Catholic service. The Vatican would not permit them to have an Orthodox service.
The Kings of Greece and Yugoslavia did not attend.
Sadly they weren't the only marriage where there were missing family members due to inter-faith marriages. Ileana's nephew later faced the same issue in reverse when he married Anne. Their refusal to raise their kids catholic meant the Pope refused to give them permission to wed. Many of Anne's catholic family members refused, or were not allowed to, attend the wedding. Her uncle, Prince Erik of Denmark, had to give her away.
Carol's wife Helena was also not in attendance at the wedding. She left the country a week before, said in part due to not being allowed to attend. Ileana and Anton saw her off at the airport. It was Ileana's support of Helena in her dispute with Carol, which led Carol's vindictive actions against his sister. He had pushed her marriage to Anton, to force Ileana to leave the country.