Hey darling, you just muddy the waters by suing everyone in sight.
When an immigrant moved to Rome from one of the cities of the Latin league, or any city which enjoyed the jus commercii with Rome, and by the exercise of the right of voluntary exile from his own state (jus exulandi), claimed Roman citizenship, it is impossible to suppose that it was necessary for him to make application to a Roman patron to represent him in his legal transactions; for the jus commercii gave its holder the right of suing and being sued in his own person before Roman courts.
When the temporal courts interfered to prevent excess of jurisdiction, they did so by prohibiting the ecclesiastical court from trying and the suitor from suing in that court.
This recourse in England sometimes took the form of the appeal to the king given by the Constitutions of Clarendon, just mentioned, and later by the acts of Henry VIII.; sometimes that of suing for writs of prohibition or mandamus, which were granted by the king's judges, either to restrain excess of jurisdiction, or to compel the spiritual judge to exercise jurisdiction in cases where it seemed to the temporal court that he was failing in his duty.
The usual view is that Theocritus went first from Syracuse to Cos, and then, after suing in vain for the favour of Hiero, took up his residence permanently in Egypt.