I've recently come across the existence of the Dvorak Simplified Keyboard created by professor August Dvorak. And I've been looking for solid sources on how to pronounce the man's name and I can't find any.
In a comment, Michael Harvey wrote:
I read an interview in Byte magazine about 1992 with John C Dvorak, the nephew of the "keyboard guy". John is an IT writer often mistakenly supposed to have invented the Dvorak Simplified Keyboard (his uncle August did that in 1936). John said "we say 'Divorak' in our family".
I would pronounce it /d(ə)ˈvɔːrʒɑːk, -ʒæk/ or (spelled another way) d(ə)-VOR-zha(h)k.
This is because that is the accepted English pronunciation of the name of the well-known Czech composer Antonín Leopold Dvořák.