Complex sentence: The King has a bad feeling about this but accepts anyway; he has six sons and a daughter from his first marriage, however, and fears that the children will be targeted by his new wife so he sends them away and visits them in secret.
Split into simpler sentences: The King has a bad feeling about this but accepts anyway. He has six sons and a daughter from his first marriage, however, and fears that the children will be targeted by his new wife; so he sends them away and visits them in secret.