Mothers and Fathers

The Shepherds were a family. True, not many of them were blood-related, but they were tied by a bond; a bond to protect everything that they hold dear. Many were big sisters and brothers, others the young'uns. There was the crazy uncle, the gynophobic cousin, and the extremely youthful (and childish) grandma. So, who, in this insane mess of a family, is "Mother" and "Father?"