Joachim married Marie Madeleine Duhon 14 Oct 1759, Liverpool, Lancashire, England. Marie (daughter of Jean Baptiste Duhon and Madeleine Vincent) was born 9 Nov 1740, Riviere, Landes, France; died 5 Apr 1785, Chantenay, Loire-Atlantique, Pays de la Loire, France; was buried 5 Apr 1785, St Martin, Chantenay, France. [Group Sheet]

1. Marie Catherine Trahan was born 21 Apr 1773, Belle-Isle-en-Terre, Guingamp, Côtes-d'Armor, Bretagne, France; was christened 24 Apr 1776, Locmaria, Belle-Ile-en-Mer, Bretagne, France; died Deceased.
2. Marie Felicite Blanche Trahan was born 16 Jan 1770, Locmaria, Belle-Ile-en-Mer, Bretagne, France; was christened 16 Jan 1770, Locmaria, Belle-Ile-en-Mer, Bretagne, France; died 22 Jun 1842, Thibodaux, Lafourche, Louisiana, United States.