(1) Loizou (Cypriot, so I assume the "zou" bit is "zoo", as in Greek, but what of the "Loi"? If it's actually λοι, I think it'd be "lee", but could it be "loy" or "lwah"?)
(2) Mansour (possibly Farsi?)
(3) Ajzensztat (I think this is romanised Hebrew. "Aazh-zen-shtart", maybe?)
(4) Trevisanut (Hungarian?)
Thanks everyone!