Dynasty (noun)

1. A sequence of rulers from the same family or group.
2. A powerful group or family that maintains its power for several generations.

Origin:

Late 16th century: from french dynastie, via latin from greek dunasteia 'power, rule', from dunastēs 'ruler, potentate', from duna- 'having power' + -astēs 'doer'.

Examples:

1. The Ming dynasty ruled China from 1368 to 1644.
2. The Kennedys are considered one of the most famous political dynasties in America.
3. The Habsburg dynasty ruled over several European countries for centuries.
4. The Rothschild family is one of the wealthiest and most influential dynasties in the world.
5. The Mubarak dynasty was in power in Egypt for over 30 years.