Here is my findings on the Duon, Duyon families of Isle Madame
Cyprien Pierre Deon (Pierre, Jean Baptiste,Jean Louis,Matthieu),Born 15 Sept 1765 at Plover, Bretagne, France, marr. Marie Gerroir d/o Jean Gerroir and Madeleine LeBlanc,b. 17 Oct 1762 ,d. 28 Nov 1878 at Pomquet.
Children of Pierre Cyprien:-
Simon b. 1798? M Victoire Pettipas, jan 15 1816, d. 28 nov 1878
Pierre b. 1791 m. Marie Madeleine Benoit
Jacques b 1796 m. Angelique Drouillet   1817
Nicholas b 1797
Isaac b. 1798, d. 7 sept 1873 at Martinique, CB, m. Lucie Toupet 22 nov 1822 at Pomquet
Elie, b. 1801 m. Elizabeth Melancon
Michel b 1806 m Adelaide Melancon 1827 at Pomquet
Cyprien b 1810 m Rufine Landry
 
 
 

Jacques Duon And Angelique Drouillet
      Anne Florienne b. June 18 1819 at Tracadie, m. Gregoire Doiron
      Simon b. 13 nov 1820 at Pomquet, m Marie Edesse (Adele?) b. 1816, d. 8 jan 1861 at Arichat
               Henriette b. 12 nov 1854 at Arichat
     Virginie b 6 july 1822 m. Lucien Doiron
     Francois N b. 29 jan 1826, d.bef 1831
     Helene b. 12 jan 1828,Tracadie, m. Simon Woolf
               Albert b 2 sept 1860, d. 24 mar 1861
               Albert b. 9 jan 1862
               Jeffrey b 30 dec 1864
               Pierre Eusebe b 11 mar 1867
    Marguerite b. 27 july 1829, Pomquet, d22 feb 1913 , m. 12 jan 1857 at Arichat, Stanislaus Hippolyte Goyetche,s/o Stanislaus and Lucie Boucher.
              Marie Seraphie b. 17 july 1858 m Abraham Marchand  21 nov 1892 at Arichat
              Jean Simon b. 17 Oct 1860 d 23 aug 1873
              Marie Sabine b. 22 aug 1863
              Pierre Henri b 11 nov 1866 m Marie Barbe Marchand , 1 feb 1892 at Arichat
              Martha Jane b. 10 sept 1870 m Alexandre Boudrot, 7 oct 1892
  Francois b. 12 sept 1831 m Marie?
  Justine b. 3 june 1833 m. Michel Pellerin
  Jean b 23 apr 1835 m (1) Catherine Renne (2) Adelaide Melancon
 Athanase m.7 jan 1852 Marie, d/o René Vigneau and Brigitte Langlois
                           Rene Michel b 9 mar 1854
              Felix b 1840 ,d 14 june 1870, m 21 nov 1864 Adeline d/o Jean Langlois and Angele Bonin
  Alex b. 25 may 1868
                            Dosithée Joseph b 22 dec 1868
                            Jean Felix b. 7 mar 1866
Theodore b. 1824 Pomquet,d. 6 july 1908 ,Arichat, m Elizabeth d/o Joseph Babin and Elizabeth Hebert
  Elizabeth died 7 july 1889 age 56

  Elizabeth b 2 nov 1854
                            Eliza Jeanne b 14 feb 1857 m 31 jan 1887, Arichat, Isidore s/o Constant Boudroy &Marie David
                            William Henri b. 9 july 1859 ,d 29 nov 1949 Arichat m30 jan 1888,Arichat
                                 Adele d/o Constant Boudrot  & Marie David
                            Adele Marie b. 25 may 1862 d. 13 jan 1865
                            Marthe b 28 feb 1864 d 31 mar 1865
                            Josephine b 14 feb 1866 d 28 mar 1896,
                           Daniel b. 16 July 1871, d. 2 mar 1896 m 5 feb 1894 , Arichat, Marie Philomene
                           D/o Benjamin Linden &Philomene Landry
                                      Remi (René) Narcisse b 2 mar 1895
                           Amelie b 24 sept 1875
 
 

(Ihave 2 more names, that were children of Theodore on their marriage records, Marie Barbe could be one of Benjamin’s daughters, Philomene , I found no dob)
                        Marie Barbe m 11 jan 1876 , Arichat Jeffrey, s/o Thomas Allain & Henriette Samson
                                  Georges b 26 dec 1876
                                  William Alfred b 2 june 1878
                                  Marie Louise b 27 jan 1880 m 11 sept 1899 William David
                                  Eliza Jeanne b 4 oct 1881
                                  Thomas Henri b 28 sept 1883
                                  Jean Dosithée b 11 nov 1884
                                  Marie Josephine b 6 july 1886
                                  Leoni 25 apr 1888 m 28 jan 1913 Marie Elizabeth Briand
                                  Helene Jeanne b? d 3 nov 1889(11mos)
       Philomene Jeanne b 13 nov 1890 m 23 jan 1911 David Boudreau
                                  Marie Eva b 6 oct 1892 m 28 jan 1918 Paul Coste
                      Philomene b? m 25 jan 1897 Charles, s/o Charles DuLoup(Woolf) & Marine Boucher
                          Charles b. 1873 d 12 sept 1906. She m. 25 oct 1923 Wilfred Boudreau
                      Children of Philomene & Charles
                                            Marie Elizabeth b 13 june 1898,d. 21 aug 1899
                                            Eliza Anne b 15 sept 1900, d. 16 nov 1900
                                            Pierre Albert b 1 june 1902
                                            Edouard Aimé b 12 may 1904
                                            Marie Adeline b 12 sept 1905
Angelique (Jane) b 1838 at Pomquet m Isadore Morel
Marie F b 15 may 1844 at Pomquet m Jacques Doiron
Melanie F b 1845 at Pomquet
 

Pierre (Cyprien Pierre, Pierre, Jean Baptiste, Jean Louis, Matthieu), m,Marie Madeleine Benoit
          Benjamin b 1822 d 15 nov 1912
                   Dominique b 21 dec 1855
                   Jeffrey b 3 aug 1857
                   Marie Jeanne b 14 dec 1859 m 8 nov 1886 Marin, s/o Jean Boudreau & Natalie Samson
                   Pierre b 5 oct 1862
                   Albert b 20 june 1865
                   Jean Alexis b 9 mar 1868
                   Lucie Julie b 17 june
                   Marie Barbe b 8 sept 1872 d 7 july 1910
          Isadore b 6 dec 1874 ,d 15 nov 1912 m 27 nov 1900 Marie Adeline (lena)
                    D/o Geoffrey Coste & Louise Boudrot
     Hector b ? d. 14 mar 1878 (9 mos)

Children of Isaac Duon & Lucie Toupet
      Thomas b? m 14 feb 1859 at Arichat, Victoire , d/o Gregoire Boudrault & Marie Landry
      Lucie b ? m 19 aug 1858 at Arichat Olivier Benoit , widower of Angele Bonin
               Joseph Dosithée b 25 jan 1870
               Joseph b ?,d 21 jan 1865
 

Children of Elias Duon & Elizabeth (Barbara) Melancon
      Fidelis b ? m 16 jan 1871 at Arichat Emily, d/oAndrew Landry & Angela Landry
 
 

Marie Jeanne Duyon (Benjamin, Pierre, etc) and Marin Boudreau
     Alvina b 5 mar 1892 m 4 feb 1918 Gentil LeBlanc
     Marie Beatrice b 22 nov 1893 m 25 feb 1919 Raymond Landry
     Al;exandre b 7 june 1896 m 20 jan 1920 Marie Eleanore Boudreau
 

Isidore Duyon (Benjamin, Pierre, etc) & Adeline DeCoste
      Marguerite Ann b 24 aug 1868
      Dominique b 10 june 1901
      Thomas b 11 nov 1902 ,d. 14 may 1990, m. 1929 at Boston, Mass. Marie Elizabeth (Lillian) Bourque,
 D/o Elie Bourque & Agnes MacDonald
                     Hazel Pearl b 29 nov 1930 ,Boston, m 10 aug 1948, Arichat Joseph Leonard Landry
                     Thomas Daniel (Donald) b 19 may 1933, Arichat
                     Edward Nicholas b 1 apr 1938 ,Arichat
                     Emilie Catherine b 4 dec 1939 at Arichat, m. 1 june 1968 Roderick Glenford Keirstead
                     Marie Claire b 8 jan 1944 ,Arichat, m (1) 22 nov 1969 Thomas John Joseph Collins,Arichat
                              (2) Arthur Basil MacInnis 31 dec 1977 at Arichat
Marie Alfreda b 6 dec 1906
 
 

Henri Duyon (Theodore, Jacques, etc) & Adele Boudrot
 Marie Josephine b dec 1891
 Henri b oct 14 1898
 Elina May b nov 13 1898(twins, or wrong date?0
(
Misc Duyons)
Marie Josephine d/o Honoré Duyon m 21 nov 1938, Charles Pierre ,s/o John Stone
 

Daniel Duyon (?) m Justine Boudreau
Charles b 3 sept 1851
Justine Seraphine b 22 mar 1855
Elie Hyacinthe b ?, d 25 mar 1857 (11 days)
Daniel b 1 aug 1858
 
 

Appoline Duyon m. Joseph DesRoches
     Isaac Thomas b 2 apr 1859