The following is the results of your search for irha-heres.
Irha-heres: According to some MSS., meaning "city of destruction." Other MSS. read
'Irhahares; rendered "city of the sun",
(Isaiah 19:18) where alone the
word occurs. This name may probably refer to Heliopolis. The prophecy
here points to a time when the Jews would so increase in number there
as that the city would fall under their influence. This might be in
the time of the Ptolemies.