The House of Khalifa is the ruling family of the Kingdom of Bahrain. They profess Sunni Islam and belong to the Anizah tribe. Some members of this tribe joined the Utub alliance which migrated from Najd in central Arabia to Kuwait, then ruled all of Qatar, more specifically Al Zubarah, which they built and ruled over before conquering Bahrain in 1783. The Khalifa family repressed the indigenous Baharna population in Bahrain.