I too, have little information on Dorinda Burnett and John Archibald Morrogh.
What I do have is census records showing Dorinda in 1850, 1860, and 1870 living with her parent(s). In 1880 she is listed in the John Archibald Morrogh household in Calcasieu Parish, Louisiana and again in the 1900 census in Saint Landry Parish. Calcasieu Parish (now Beauregard Parish) is where Dorinda’s parents and siblings resided.
In 1880 John and Dorinda have a 5 year old son John F, so I assume they were married sometime between 1870 and 1875. I tried to find this household in 1910 census, but no luck. Have you located this family in the 1910 census?
In the 1920 census John A, is living with his son Alfred in New Orleans. What is confusing is John A’s death certificate showing his death in Beaumont, TX a year later. Do you know if he moved between son’s households during his widow years? Side note, Alfred Morrogh’s grandfather was Alfred Burnett, I suppose there is a name connection there. Another side note, Dorinda’s sister Sidnah died a widow in Beaumont in 1928.
Dorinda’s death certificate shows Harris County, TX. Were there Morrogh family in Houston, New Orleans and Beaumont?
Honesty, other than what is posted on Find A Grave I do not know any information about William Henry Morrogh. I am guessing you are the one posting the Find A Grave information about the Morrogh family? I did search my family tree and ran across two other William Henry’s, both had the surname Hodges, which is an old family name from Calcasieu Parish.
If I might ask, are you a direct descendant of John A and Dorinda? Please feel free to pass my contacts along to any other’s that are researching the Burnett side your family. firstname.lastname@example.org
Thanks again for your response and if there is any information I can provide or share, please let me know.