Alexandrine Desessart was born in Louisiana on January 3, 1838 in Opelousas, Louisiana to Emelienne Chenevert of Point Coupee, Louisiana.
She married Diomede Celmis Dominique on March 17, 1859 in the Opelousas Courthouse and had the marriage blessed on March 19 in St. Landry Catholic Church.
Known children of the marriage:
Leon Dominique (c.1860)
Felice Dominique (c.1863)
Charles Dominique (c.1866)
Marie Ena Dominique (c.1870)
Blanche V. Dominique (c.1872)
Henri A. Dominique (c.1874)
In 1880 she lived with her husband and children in Opelousas. Her mother lived with them.
By 1900 she was widowed, but still lived in Opelousas with several of her children, one of whom was widowed with three children.
Alexandrine Desessart Dominique died In St. Landry Parish, Louisiana, on April 6, 1918. 
↑ Hebert, Donald J., Southwest Louisiana Records, 1750-1900 ("SWLR"), CD #101 (Baton Rouge, LA: Claitor's Publications Division, 2001);
citing St. Landry Catholic Church record (OPEL. CH.: V. 4, P. 189). (Mother also listed as HENERY, born Pt. Coupee, died 1885, Pt. Coupee)
↑ "Louisiana, Parish Marriages, 1837-1957," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QKJH-B7XV : 15 October 2015), Celmis Dominique and Alexandrine Dessessarts, 17 Mar 1859; citing St. Landry, Louisiana, United States, various parish courthouses, Louisiana; FHL microfilm 870,695.
↑ "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MDXX-DZ9 : 13 July 2016), Alexandrian Dominique in household of Celonis Dominique, Opelousas, St Landry, Louisiana, United States; citing enumeration district ED 38, sheet 113C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0469; FHL microfilm 1,254,469.
Celonis Dominique Self M 41 France
Alexandrian Dominique Wife F 42 Loisiana
Leon A Dominique Son M 20 Louisiana
Felice Dominique Daughter F 17 Louisiana
Charles Dominique Son M 12 Louisiana
Mary Dominique Daughter F 9 Louisiana
Blanche V Dominique Daughter F 8 Louisiana
Henry A Dominique Son M 4 Louisiana
Ameliann Lonstramn Mother-in-law F 55 Louisiana
↑ "United States Census, 1900," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MSR7-QSR : 20 January 2015), Alexandra Dominique, Opelousas town, St. Landry, Louisiana, United States; citing sheet 13B, family 261, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,580.
Household Role Sex Age Birthplace
Alexandra Dominique Head Female 72 Louisiana
Leon Dominique Son Male 40 Louisiana
Leon Burr Dominique Grandson Male 10 Louisiana
Rita Dominique Granddaughter Female 7 Louisiana
James O Dominique Grandson Male 5 Louisiana
Charlie Dominique Son Male 34 Louisiana
Marie Dominique Daughter Female 29 Louisiana
Blanche Dominique Daughter Female 27 Louisiana
Henry Dominique Son Male 25 Louisiana
↑ "Louisiana Deaths Index, 1850-1875, 1894-1956," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/F3SF-H7Z : 12 December 2014), [Mrs] Selmis Dominque, 06 Apr 1918; citing Opelousas, St. Landry, Louisiana, certificate number 5858, State Archives, Baton Rouge; FHL microfilm 2,364,701.