Keneva and Valek were deported from Lithuania during World War I. They fell in love while imprisoned in labor camps. Eventually, they were released from the labor camp and settled in America, where Keneva gave birth to the Vilkas siblings's grandparents, who later gave birth to Viktoria Vilkas. The siblings's grandfather started a successful business that manufactured weapons, so they're filthy rich.
Viktoria Vilkas was rather beautiful, as well as a talented artist. While studying at Harvard, she caught the eye of Apollo (or some other god) and they had a brief affair. When Mykolas was born, Viktoria panicked. She wasn't willing to drop out of college to raise him, but she couldn't bear to give him up for adoption. Eventually, she decided to send him to live with her sister, who raised Mykolas until he was seven. On Mykolas's seventh birthday, Viktoria sent him off to a boarding school in England. Shortly after Viktoria finished college, she met Hades and they had an affair, resulting in Auris's birth. She raised Auris until he was six, then sent him off to boarding school in France. A year later, she gave birth to yet another kid - Nathan, a son of Phobos. Viktoria sent Nathan off to a boarding school in Spain.
Nathan was sent to a boarding school in Spain, where he spent a few years. Sometime after coming there he met a demigod, Jason, who was in his class. Nathan didn’t know what he was at this point, but Jason suspected that Nathan was a demigod. So he decided to attack and frighten Nathan, in an attempt to draw out Nathan’s powers, and prove he was a demigod.