Citat från Wikipedia: "A sept is an English word for a division of a family, especially a division of a clan. The word might have its origin from Latin septum "enclosure, fold",[1] or it can be an alteration of sect.[2]
The term is found in both Ireland and Scotland. It is sometimes used to translate the word slíocht, meaning seed, indicating the descendants of a person (i.e., Slíocht Brian Mac Diarmada, the descendants of Brian MacDermott)."