Yuri - From Russian Yuriy which is very popular now . It comes from Greek georgios "farmer", which corresponds to Arm. name Gevorg
Osipyan - armenian family name derived from Hovsep (Armenian for Joseph).
Variants of Hovsepian include Hovsepyan, Ovsepyan, Osipian, Housepian, Hosepian, Hovsapian etc.