The University of Louisiana at Lafayette Press in 2013 published Gallant Creoles, A History of the Donaldsonville Canonniers. At the time of Petersburg they were known has Landry's (La.) Battery. They were assigned to Richardson's Battalion of A. P. Hill's Third Corps and from June 1864 to March 29, 1865 stationed at Battery 25 (Rives Salient) near the Jerusalem Plank Road. On March 29 they moved from there to sure up the right flank and thus stationed in a redoubt on the White Oak Road, near Burgess Mill on Hatcher's Run that was also near the plank bridge on the Boydton Road. When the break through occurred on April 2 they fought at the above position and were one of the last units to leave along that line. They then participated in the delaying action at Sutherland Station on the South Side Railroad. They rejoined General Lee's army at Amelia and in the end, the evening of April 8, battled against Custer's cavalry in the Battle of Appomattox Station. They surrendered with General Lee's Army in the following days. One section also participated on April 7 in the Battle of High Bridge on the Appomattox River near Farmville. There were a number of primary sources used in documenting their history, and for the Petersburg and Appomattox campaigns. I hope this helps and please check out the "Gallant Creoles" to learn more. If you have any questions please contact me.
P.S. Thanks Ken, hope you are doing well.