[lionsdan]

I've known multiple people with the last name spelled Koch. One pronounced it "Coke", one "Cook", one "Cock", and one "Cahch".

[stevekemp]

Dialects and accents really make this kind of difference very pronounced.

In Edinburgh, Scotland, there is "Cockburn Street". Which is pronounced co-burn. Other good examples trip up tourists, such as Buccleuch Street which is pronounced "Buck-Loo".

[parenthesis]

My favourite street name in Edinburgh is "Horse Wynd", unfortunately not pronounced the comical way.

[Jap2-0]

I also knew a Kock who pronounced it "Cuck", just to add to the list of pronunciations.