▁to ▁their ▁own . ▁Before ▁this ▁it ▁was ▁common ▁for ▁married ▁women ▁to ▁use ▁their ▁husband ' s ▁name ▁in ▁every day ▁life ▁but ▁this ▁had ▁no ▁legal ▁recognition . ▁ ▁A ▁common ▁name ▁does ▁not ▁replace ▁a ▁person ' s ▁family ▁name ▁as ▁written ▁on ▁their ▁birth ▁certificate . ▁ ▁From ▁ 4 ▁March ▁ 2 0 0 2 ▁to ▁ 4 ▁December ▁ 2 0 0 9 , ▁children ▁given ▁both ▁parents ' ▁names ▁had ▁to ▁have ▁them ▁separated ▁by ▁a ▁double ▁dash ▁( ex : ▁Dup ont -- Cla ire mont ). ▁On ▁ 4 ▁December ▁ 2 0 0 9 , ▁the ▁Conseil ▁d ' État ▁ruled ▁that ▁a ▁space ▁can ▁be ▁used ▁instead ▁of ▁the ▁double ▁dash . ▁As ▁a ▁result , ▁forms ▁asking ▁for ▁the ▁family ▁name ▁( nom ▁de ▁famille ) ▁do ▁so ▁on ▁two ▁lines ▁(" 1 ère ▁partie : ▁.. ... ▁", ▁" 2 e ▁partie : ▁.... ") ▁ ▁Germany ▁In ▁Germany , ▁since ▁ 1 9 7 7 , ▁a ▁woman ▁may ▁adopt ▁her ▁husband ' s ▁surname ▁or ▁a ▁man ▁may ▁adopt ▁his ▁wife ' s ▁surname . ▁One ▁of ▁them ▁may ▁use ▁a ▁name ▁combined ▁from ▁both ▁s urn ames . ▁The ▁remaining ▁single ▁name ▁is ▁the ▁" family ▁name " ▁( E hen ame ), ▁which ▁will ▁be ▁the ▁surname ▁of ▁the ▁children . ▁If ▁a ▁man ▁and ▁woman ▁both ▁decide ▁to ▁keep ▁and ▁use ▁their ▁birth ▁names ▁after ▁the ▁wed ding ▁( no ▁combined ▁name ), ▁they ▁have