Phonetic transliteration:
杜 'du' (English 'Du-' or French 'Du-') +
伯 'bo' (rendering '-ber-' / '-bour-') +
格 'ge' (rendering the German/Yiddish '-berg' or French '-bourg' suffix). Compare similar -berg names:
斯皮尔伯格 Spielberg,
海德堡 Heidelberg,
卢森堡 Luxembourg. The closing
格 /
堡 /
贝格 are interchangeable depending on era and translator.