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Deffains family page

This family came to Jersey in the 19th century, from Brittany, and probably from the Cotes d'Armor department in the north-west of the region. It is still present in the island today.


The 1901 St Helier register entry for the marriage of Joseph Marie Deffains and Anne Marie Herve

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Origins of surname

This is a name from the Cotes d'Armor and Ile-et-Vilaine departments of north Brittany. It identifies someone from a locality called Fain or Fains. There is a commune called Fains in Ile-et-Vilaine. The name may also be associated with the old French for fin, meaning 'end' and refer to someone living on or beyond the boundaries of a village.

It could also, it is suggested, be derived from fein, the old French for hay.

Early records

We are not entirely confident in the connection between the Joseph Deffains who is at the head of the first family to settle in Jersey and Joseph Jean Marie Deffains, and his ancestors from Plemy, Cotes d'Armor shown in the tree below, but we think there is a strong likelihood that this is the same family.


  • Deffains, the variant common in Jersey
  • Defains
  • Defain
  • Deffain

Family records


Family trees


Births and baptisms

None of the Deffains children born in Jersey up to 1915 appears to have been baptised.


Great War service

Family gravestones

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Personal tools

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