Buddhist Dictionary of Pali Proper Names by G P Malalasekera
ārakkhadāyaka thera
Ārakkhadāyaka Thera:1.ārakkhadāyaka Thera.-An arahant.In a previous birth he built a railing (vedi) round the thūpa of the Buddha Siddhattha and made provision for its protection.Six kappas ago he was a king named Apassena.Ap.i.214-15.
2.ārakkhadāyaka Thera.An arahant.He put a fence round the thupa of the Buddha Dhammadinna and arranged for its protection.This act resulted in his becoming an arahant in the present age.Ap.i.253.