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Joste family page


The Joste ladies of Helvetia House School

If you can help with information about the Joste family, please contact, using Jerripedia as the subject of your email. We are particularly interested in information which will help create further family trees, family histories and photographs

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Origins of surname

This is probably a variant of Jost, a name from Alsace in the north east of France. However, Josse, which is also recognised as a variant, is from Brittany, where the son of King Judicael was given the name. He refused to take the throne and retreated to a monastery, and then lived as a hermit, performing many miracles in Picardie in the north east of France, which explains why he is venerated as Saint Josse in the two extremes of the country.

Early records

Pierre Henry Joste and Susanne Bertram, who do not appear to have married in Jersey, had four children baptised in Grouville from 1714. They do not appear to have any connection with the family in the tree linked below, which came to Jersey from Switzerland and founded Helvetia House School.

There are also other Joste baptisms in the list linked below which appear to have no connection to this family, but also cannot be linked to each other.


  • Jost
  • Joste
  • Josse
  • Josselin, another Breton family name with the same root

Family records


Family trees


Church records


Family wills

These wills created by members of the Joste family are now held by Jersey Archive. By visiting the archive site and using the names, dates and reference numbers shown here, it is possible to view a copy of each will. You will have to subscribe to the Archive's online service to do this. To find out more about this collection, which covers the period from 1663 to 1980, and how to search for your family's wills there, visit our Jersey wills page

  • Delphina Joste, 5 Old Street, St Helier - 3 March 1917, D/Y/A/76
  • Philippe Joste of St Helier, now of Trinity - 28 August 1874, D/Y/A/37

Family businesses

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