Omran is a name like John which is difficult to locate. Mathia or maybe Matya there is a family in
Jerusalem who are (Lateen) which you call
Roman Catholic and Halak (we have
Christians - Roman Catholic also and Moslems. Need more details to help. Although Halak means a barber which is a profession and we have too many names from many cities have the same names as Halak,
Haddad (blacksmith),
Najjar (carpenter) ..etc from maybe every city in the area.