The correct spelling is Hortobágyi László; however, he probaby uses his name in the international way, i.e. first name first, family name second, and without the accents: "Laszlo Hortobagyi." FYI, there is no accent circumflex in the Hungarian language.
yeah...there are some different spellings. I have two CDs of him, sometimes his name is written with ´ and sometimes with ^. Perhaps these speelings are equivalent. I use the spelling with ´ because it seems to be more common.
Great music. But why does the title of his web page ( http://www.el-horto.hu ) spell his name [artist]Lâszlô Hortobâgyi[/artist]? Taggers get confused by incomprehensible Hungarian accents, and so this guy has several different artist pages on last.fm.