Thomas, the census information you provided on this family is just what Linda needs. You are indeed a "Good Samaritan".
Linda, because there are so many people with the same names and so many places to look, when you ask for assistance, give as much information as you can: Birth dates are particularly important. Because so many of our ancestors could neither read nor write, the priest/minister/civil servant had to spell their names phonetically.
The best place to look for individuals b. in St. Martin Parish is Southwest Louisiana Records by Rev. Donald J. Hébert. Before he died, Fr. Hébert published 41 Volumes of SWLR beginning with the year 1750 and ending with the year 1909. Fr. Hébert recorded births, marriages, and deaths from Cathokic Churches, and he also recorded civil marriages, successions, etc., from 13 area courthouses, regardless of race, sex, or creed. That is why his volumes are so important. To see Fr. Hébert's Obit and a list of his publications go to: hebertpublications.com
First: I looked for Alexis Para in V. 36 (1904) and he is not listed. There are no individuals named Para in this Vol.(I have observed that dates given in the census are often incorrect.)
Second: I looked for Alexis Para in V. 35 (1903) and there are only two Pare individuals: Eugene Pare m. 14 Apr 1903 Evia LeDoux (Opel. Ct. Hse.: Mar. #29738) Opelousas, LA is in St. Landry Parish Rita Elizabeth Pare (Emile & Cora Davis) b. 20 Apr 1903 (Franklin Ch.: v. 5, p. 69)Franklin is in St. Mary Parish Information from Fr. Hébert's Guide to Church Records in Louisiana.
Third: I looked for Alexis Para in V. 37 (1905) and there were no Para/Pare individuals.
Fourth: I looked for Antoine Para in V. 8 (1866-1868). Antoine's birth date was not listed but I did find one Antoine Pare: Genevieve Pare (Antoine & Zilia Fuselier) b. 25 Dec 1867 (Opel. Ch.: v. 6, p. 264)
Fifth: I looked for Antoine Para/Pare/Paret in V. 7 (1861-1865)and this is what I found: Paret (sometimes: Pare) Antoine Pare of France (Jean & Marie Chabert) m. 11 Jun 1862 Zelia Fuselier (Louis & Genevieve Guillory) (Opel. Ch.: v. D. #71) Opel. Ch: St. Landry Catholic Church, Opelousas, LA Jean Louis Paret (Antoine & Zilia Fuselier) b. 24 Jun 1865 (Opel. Ch.: v. 6, p. 213) Marie Paret (Antoine & Zilia Fuselier) b. 12 Mar. 1863 (Opel. Ch.: v. 6, p. 181)
Sixth: I looked for Antoine Para/Pare/Paret in Vol. 6 (1855-1860) but there were no Para/Pare/Paret individuals in this volume. NOTE: I tried three volumes for each search. The Archives in Baton Rouge will search for you but there is a fee.
Seventh: I looked for Charley Para age 32 in V. 29 (1898) but he is not listed.
Eighth: I looked for Charley Para in V. 30 (1899) but he is not listed.
Ninth: I looked for Charley Para in V, 28 (1897) but he is not listed.
Tenth: I looked for Duval's in V. 13 (1877-1878) and found the following:Duval (sometimes: Duvalle) Adeline Duval m. 12 Jun 1878 Joseph Narcisse Langlos (Laf. Ch.: v, 5, p. 171) Parent's names not listed. Laf. Ch.: St. John's Cathedral, Lafayette, LA Emma Duval (Alonzo & Felicia Doiron (sic) b 8. May 1878 (MC Ch.: St. Clothilde: v. 1, p. 51)MC Ch. Sacred Heart Catholic Church, Morgan City, LA Joseph Duval (Eugene & Felicite Dupre) b. 22 -- 1877 bt. 9 Feb 1880 (MC Ch.: St. Clothilde: v. 1, p. 64) Marie Duval d. 10 Dec 1878 at age abt 52 yrs(Laf. Ch.: v. 4, p. 228)
Eleventh: I searched for Duval's in V. 14 (1879-1880) and found the following: (Duval (sometimes Duvall): Angelina Duval (William & Celestine Mayon) m. 9 Feb 1880 William Mason (Thomas & Fannie Duval)(MC Ch.: Sacred Heart: v. 1, p. 13)MC Ch.: Sacred Heart Catholic Church, Morgan City, LA NOTE: There are three different sets of church registers at Sacred Heart. They are: (1) St. Andrew Baptisms from 1861 to 1927 (2) St. Clothilde Baptisms from 1866 to 1885 (3) Sacred Heart Baptisms from 1867 to 1939 These are the earliest registers. The records of Vol. 1 of Bayou Boeuf from 1856 to 1861 were lost in the Civil War. David Duval (Lonzo (sic) & Felicianne Doiron (sic) b. 29 Sep 1879 (MC Ch.: St. Clothilde) Edward Duval (Edward & Calistie Smith) b. 13 May 1880 (MC Ch.: St. Clothilde: v. 1, p. 75) Edward Duval (Michel & Seraphine Gachet) m. 5 May 1880 Emma Comeaux (Desire & Clara Bertrand)(MC Ch.: Sacred Heart: v. 1, p. 14) Elodie Duval m 29 Dec 1880 Francois Broussard (Laf. Ch.: v. 6, p. 87) parents' names not listed Eloise Duval (Michel & Seraphine Gachet) m. 14 Apr 1879 Leo Comeaux (Octave & Eugenie Himel) (MC Ch.: Sacred Heart: v. 1, p. 12) Eugene Duval (Michel & Seraphine Gachet) m. 29 Apr 1882 Mary Adeline Nope (John Treville & Honorine Gachet) (MC Ch.: Sacred Heart: v. 1, p. 13)
Twelfth: I looked for Duval;s in V. 12 (1875 -1876) and this is what I found: Alonzo Duval (Michel & Seraphine Gachet) m. 28 Feb 1876 Feliciana Doiron (Etienne & Marie Louise Trahan) (MC Ch: Sacred Heart: v. 1, p. 8) Augustin Duval d. 23 Feb 1875 at about age 100 yrs (Laf. Ch.: v. 4, p. 184) John Clifton Duval (Alonzo & Felicianne Doiron) b. 14 Dec 1876 (MC Ch.: St. Clothilde: v. 1, p. 43) Marie Duval m. 15 Jul 1875 Joseph Breaux (Laf. Ch.: v. 5, p. 28)Parent's names were not listed.
Good luck in your research.
Best regards, Rosie Morein Wells Birmingham, Alabama