Theodoric Basileum

Umbra Basileum
Since Theodoric valued the traditional ideals of a royal family, he was very determined to make his son the perfect leader. He was quite devoted, making sure that Umbra's schooling was going well, but after the death of Queen Maria, he began to shut him out to defend himself against the grief and the feeling that he had failed or "ruined" his son. Supposedly his grief and anger drove him mad, driving him to commit the infamous massacre at Nox Palace.

Maria Basileum
He loved... Oh god oh fuck

Aura
Though he admired Aura's ability and eventual potential to become the royal seer, he became disgruntled when she started speaking out against his decisions and encouraging him to reconnect with his son before it was "too late". He had planned to send her away to Lucerna without Umbra's knowledge, until he eventually snapped and killed her along with everyone else in the palace.

Trivia

 * "Basileum" means "crown" in Latin.