德雷曼 transliterates the German surname 'Dreyman':
德 (dé) for 'Drey-' (with the 'r' approximated),
雷 (léi) reinforces the '-ay-' vowel, and
曼 (màn) for '-man'. Best known to Chinese audiences as Georg Dreyman from Florian Henckel von Donnersmarck's Oscar-winning film 《
窃听风暴》 (Qiètīng Fēngbào, The Lives of Others, 2006), an East German playwright surveilled by the Stasi.