Kingdom of great britain
This is what led to the NORMAN CONQUEST: the last real Wessex king was Edward the Confessor, who died childless. The throne was taken by King Harold, his wife's nephew. But Edward had preferred his Norman cousin William for the job. William felt he had been swindled, and proceeded to invade and conquer. William's son King Henry MARRIED the House of Wessex and fathered Matilda, the mother of Henry II, so both houses came together in one king, problem solved!