a person earlier then a grandparent who is a direct relative

predecessor in family

having strong control or authority; dominating

superior, controlling

ancestors

ancestor

ruling

commanding

forcing others to do what one wants

arrogant, domineering

supreme, superior in power; pre-eminent, superior

principal, superior

having more power, numbers or influence than others

ruling; most important

(of power) highest; ruling a country; a ruler, e.g. a king or queen

dominant, effective