as a member of the family 意味

• 家族の一員として
  

• family member:    家族｛かぞく｝、親族｛しんぞく｝
• family member of:    《a ～》～の家族｛かぞく｝の一人、～の血縁者｛けつえんじゃ｝
• adult member of the imperial family:    成年皇族｛せいねん こうぞく｝

例文

not just in fact as a member of the family
家族の一員という事実だけではなく

as a member of the family
家族の一員として―

in addition , from the context , some people interpret it as ' a young warrior who can be relied on the same as a member of the family .'
また文脈から「一族同様に信頼した若武者」と解釈する向きもある。

naidaijin (minister of the center ) arifusa rokujo (1251-1319 ), a son of michiari , became a vassal of emperor gouda , and his son , chunagon (associate chief of the councilor of state ) aritada rokujo also served well as a member of the family of daikakuji-to (imperial lineage starting with emperor kameyama ).
通有の子、内大臣六条有房（1251年－1319年）は後宇多天皇の近臣となり、その子の中納言六条有忠も大覚寺統の公家として活動した。

according to " dai bukan " (a book of heraldry ), although he was a dependent in his family , he could be identified as a member of the family with omote-daka (face value of kokudaka assessed by the feudal government ), thererfore , he is estimated to have had omemie (the privilege to have an audience with one ' s lord , a dignitary , etc .) .
『大武鑑』によれば、慶応3年（1867年）には部屋住みながらも表高家衆の一人として確認できることから、すでに御目見を済ましていたと推測される。