Henry supported his brother Richard in his bid to become King of the Romans in 1256, but was unable to place his own son Edmund on the throne of Sicily, despite investing large amounts of money.
Henrique apoiou o seu irmán Ricardo na súa pugna por converterse en Rei de romanos en 1256, pero foi incapaz de poñer o seu propio fillo Edmund no trono do Sicilia, a pesar de desembolsar grandes sumas de cartos.