Ismail Agha Shekak, better known as Simko, living between Van and Urmia, murdered the patriarch of the Nestorians, who fled to Persian territory and called upon the Russians to avenge the murder.
There are two harbours, both artificial - the old or northern harbour and the southern or Agha harbour.
He wrote a romance, Hermann Agha (London, 1872), A Narrative of a Year's Journey through Central and Eastern Arabia (London, 1865), Essays on Eastern Questions (London, 1872), and other works.
An opening in the south jetty affords an entrance into Agha harbour, constructed in Agha Bay.
Ten per cent of the value of the prizes was paid to the treasury of the pasha or his successors, who bore the titles of Agha or Dey or Bey.