Keeping the Dragon by Rinelle Grey

Calrian thought he’d never see his family again. He thought they were all dead. His greatest enemy had told him he’d killed them all.
He should have known better than to trust Ultrima.
When a photo of his brother, awake and well, appears in the news, Calrian knows he needs to find him. But that means putting his mate and children at risk. Especially with Ultrima on the prowl.
How can Calrian fulfil his responsibilities as a prince, and as a mate, when they’re counter to each other?