Following are a number of back-translations as well as a sample translation for translators of Isaiah 9:6:

• Kupsabiny: “There is a child that shall be born to us,
  we shall receive a boy child.
  (He) shall be given power to rule.
  (He) shall be called ‘The amazing reconciler’,
  ‘The God of authority’,
  ‘Eternal Father’,
  ‘King of peace.’” (Source: Kupsabiny Back Translation)
• Newari: “For a child is born for us.
  For us a son has been given.
  He will rule [over] us.
  His name will be
  "Very Amazing Counsellor," "Strong God," "
  Father of everlasting," "Prince of Peace."” (Source: Newari Back Translation)
• Hiligaynon: “They will- also really -rejoice for a son will-be-born and he will-reign-over us (excl.). He will-be-called ‘Amazing Counselor, Almighty God, Father Without End, and Leader/[lit. Head] who Makes- Peace -Spread!’” (Source: Hiligaynon Back Translation)
• English: “Another reason that we will rejoice is that a special child will be born for us;
  a woman will give birth to a son,
  who will be our ruler.
  And his names will be ‘Wonderful Counselor’, ‘Mighty/Powerful God’, ‘Our Everlasting Father’, and ‘Prince/Ruler who enables us to have Peace’.” (Source: Translation for Translators)