Karl Matthew Nebel (d. 05 May 1919) married Eva Elizabeth Wendel (b. 22 August 1856, Niederharbach, Reinpfalz, Germany, d. 12 September 1909) on 30 October 1876. They are buried in the Nebel family tomb in Metairie Cemetery, Metairie, LA. They had 9 children:
Bartholomew "Berthold" Nebel, b. abt. 1877, d. 11 September 1965 in New Orleans
Arnold Newton Nebel, b. 1878, d. 02 November 1922 in New Orleans, married Elizabeth Gilmore (d. 08 October 1960)
Eddystone Clarence Nebel, b. 1880, d. 21 August 1963 in New Orleans, married Stella Marie Troxler (b. 09 January 1885). Both are buried in Metairie Cemetery in the family tomb of Karl Nebel.
Cornelia Nebel, d. 06 March 1950, married Hugh Tracey (d. 17 April 1928)
Evelyne Nebel, d. bef. 1962, married John Joseph Drury. They had a son, Karl Matthew Drury, who is also interred in the family tomb in Metairie Cemetery with his parents.
Thekla Nebel, b. abt. 1884, d. 26 February 1962 in New Orleans. She was single.
Hermann Nebel, b. 06 March 1888, d. 02 May 1950, married Henrietta Theresa Wehrmann on 12 December 1911. They are both buried in Garden of Memories Cemetery in Metairie, LA (these are my husband's grandparents)
Karl Wendel Nebel, b. 1895, d. 23 September 1957, married Concordia K. Marks (d. 12 October 1955). Both are buried in the family tomb in Metairie Cemetery.
Lucas Nebel, d. 24 December 1957.
There is a little more information for you on the Troxler/Nebel marriage above, by searching LA GENWEB ptoject, in St. Charles Parish, under the Troxler lineage.
Hope this helps.