Editing Arthur I, Duke of Brittany (section)

==Genealogical table==
{{chart top|Arthur's position within the English royal family{{sfn|Seel|2012|loc=Figure 1}}}}
{{chart/start}}
{{chart |border=0| | | | | | | | | |William| | | |William=[[William the Conqueror]]}}
{{chart | | |,|-|-|-|-|-|-|-|^|-|-|-|v|-|-|-|.| | |}}
{{chart |border=0| |Robert| |Fulk|y|Eremburga| |William| |Henry| |Henry=[[Henry I of England]]|Fulk=[[Fulk V of Anjou]]|Eremburga=[[Eremburga of Maine]]|William=[[William II of England]]|Robert=[[Robert Curthose]]}}
{{chart | | |!| | | | | |!| | | | | | | |,|-|^|-|.| | |}}
{{chart |border=0| |Clito| | | |Geoffrey|~|~|y|~|~|Matilda| |Adelin| |Geoffrey=[[Geoffrey V of Anjou]]|Matilda=[[Matilda of England|Matilda]]|Adelin=[[William Adelin]]|Clito=[[William Clito]]}}
{{chart | | | | | | |,|-|-|-|-|-|^|-|v|-|-|-|.|}}
{{chart |border=0| | | | | |Henry|y|Eleanor| |Geoffrey| |William| |Eleanor=[[Eleanor of Aquitaine]]|Henry=[[Henry II of England]]|William=[[William FitzEmpress]]|Geoffrey=[[Geoffrey VI of Anjou]]}}
{{chart | |,|-|-|-|v|-|-|^|v|-|-|-|v|-|-|-|-|-|-|-|-|-|-|-|v|-|-|-|-|-|-|-|v|-|-|-|-|-|-|-|.| |}}
{{chart |border=0|Henry| |Matilda| |Richard| |Geoffrey|y|Constance|y|Guy| |Eleanor|y|Alfonso| |Joan|y|Raymond| |John| | |Henry=[[Henry the Young King]]|Richard=[[Richard I of England]]|Geoffrey=[[Geoffrey II of Brittany]]|John=[[John of England]]|Matilda=[[Matilda of England, Duchess of Saxony|Matilda]]|Eleanor=[[Eleanor of England, Queen of Castile|Eleanor]]|Alfonso=[[Alfonso VIII of Castile]]|Joan=[[Joan of England, Queen of Sicily|Joan]]|Raymond=[[Raymond VI of Toulouse]]|Constance=[[Constance of Brittany]]|Guy=[[Guy of Thouars]]}}
{{chart | | | | | |!| | | | | |,|-|-|-|(| | | |!| | | | | | | |!| | | | | | | |!|}}
{{chart |border=0| | | | |Otto| | | |Eleanor| |Arthur| |Alice| | | | | |Blanche|~|Louis| |Raymond|Arthur=Arthur I of Brittany|Eleanor=[[Eleanor, Fair Maid of Brittany|Eleanor]]|Otto=[[Otto IV of Germany]]|Blanche=[[Blanche of Castile]]|Louis=[[Louis VIII of France]]|Raymond=[[Raymond VII of Toulouse]]|Alice=[[Alix of Brittany]]}}
{{chart/end}}
{{chart bottom}}