When that still happened (namely, in the Middle Ages) most Kings just ruled on as if nothing had happened and they usually called on their local bishops and cardinals to give out a statement that the excommunication itself was illegal. But in the meantime, they sought through quiet diplomacy to solve the issue that had caused the Pope to issue the excommunication.
They had to, because excommunication relieved the local lords of their oath of fealty and obedience to their king, and this might give these vassal lords a pretext to stir up trouble or support another member of the ruling House in a bid for power. Occasionally a Pope excommunicated a King so often that even his vassals and bishops stopped taking it seriously.
King John was excommunicated in England
there would be no grand mystery and he would have remained king..
When Thomas Becket came back to England, he refused to forgive the King's followers and excommunicated them (banished them from the Church).
He would have been killed
King John was excommunicated by the church [The Pope] in 1209.Excommunicatedmeans the you have done something bad [so can't go to heaven] so is sent to hell.
King John was excommunicated in England
He was excommunicated
King Henry VIII of England.
If a king was excommunicated from the church, he couldn't be king anymore.
He was excommunicated by the church
I am not sure what your question is in reference to but the pope usually limits his powers of excommunication to heretics.
he was excommunicated and put in jail
There would be no more king cobras.
He became King after his brother Richard I died. As Richard I left no heirs John became King.
there would be no grand mystery and he would have remained king..
Pope Clement VII excommunicated King Henry VIII.
He Excommunicates King Henry Vii Cuz He LOveess Itt THee shoodet