Members of the clan are not necessarily related biologically as bloodlines show little meaning to the goule.
A clan will consider themselves members of a single extended family, often referring to others of their generation as "Rookery Brothers" or "Rookery Sisters". Goule are hatched from eggs, which are stored communally in a rookery. As such, parents are never certain which of the hatchlings is their biological offspring. Rather, hatchlings are "children of the entire clan".
