οἱ τότε ἤρχοντο εἰς τὴν νῆσον → they were then coming to the island
frustrātor: ōris, m. id.,I a deceiver; delayer (post-class.): judicum, Symm. Ep. 10, 44; Dig. 43, 16, 19.
frūstrātŏr, ōris, m. (frustro), celui qui élude, qui abuse : Symm. Ep. 10, 44 ; Dig. 43, 16, 19.