Following a request from the monks of Patmos, Ioannes II confirmed the chrysobulls of his father (Alexios I), granting the monastery exemption from certain taxes for a ship and an annual donation by the doux of Crete of 300 modioi of wheat and 24 nomismata. Another chrysobull granted them monks an additional annual donation of 100 modioi of wheat to be given by the doux of Crete from the revenues of the kastron of Chandax, and exempted their ship from the antinaulon tax. Gegorios Kamateros, Ioannes' logothetes, had the first chrysobull registered in his sekreton, and it was signed by an official named Ioannes