House of Joseph (LDS Church)

The House of Joseph (sometimes referred to as the Tribe of Joseph) is a designation which members of the Church of Jesus Christ of Latter-day Saints (LDS Church) apply to the ancient "birthright" tribe of the house of Israel (Jacob) as it is described in the Old Testament, made up of the tribes of Ephraim and Manasseh. The tribes' namesakes — the two sons of Joseph of Egypt — are first mentioned in Genesis 41:50-52.

Source: Wikipedia — House of Joseph (LDS Church) (CC BY-SA 4.0)