HanoverianHan‧o‧ve‧ri‧an /ˌhænəʊˈvɪəriən◂/ adjective 
of or supporting the line of English kings and queens which originally came from Hanover and ruled from 1714 to 1901: 
George III was a Hanoverian king.
of or supporting the line of English kings and queens which originally came from Hanover and ruled from 1714 to 1901: George III was a Hanoverian king.