The Dutch pronunciation of Goswin is: /'ɣɔs.ʋɪn/I was unable to find audio clips to prove it to you, but I did manage to find one for the related name Goswijn, which is pronounced essentially the same (except for the vowel in the second syllable):• https://nl.forvo.com/search/Goswijn/nl/ (in Dutch)The -win in Goswin is pronounced exactly the same as the -win in names like Alwin and Edwin. [noted -ed]
I was unable to find audio clips to prove it to you, but I did manage to find one for the related name Goswijn, which is pronounced essentially the same (except for the vowel in the second syllable):
• https://nl.forvo.com/search/Goswijn/nl/ (in Dutch)
The -win in Goswin is pronounced exactly the same as the -win in names like Alwin and Edwin. [noted -ed]