Statistics for occurrence #1 of “Slidell” in article pos=40 of The Daily Dispatch: December 9, 1861., [Electronic resource]:

...is so much needed to enlighten the understandings of British statesmen respecting American affairs." These extracts show that no little apprehension exists lest the capture of Messrs. Mason and Slidell may yet find ample retaliation.
...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† Slidell 940 4 176 0 0 user votes
John Slidell 1,060 0 22 0 0 user votes
J. Slidell 17 0 1 0 0 user votes
Alesers Slidell 12 0 0 0 0 user votes
Rosine Slidell 11 0 1 0 0 user votes
Hon John Slidell 6 0 0 0 0 user votes
Alexander Slidell 5 0 1 0 0 user votes
Nr Slidell 4 0 0 0 0 user votes
L. Slidell 2 0 0 0 0 user votes
Matilda Slidell 2 0 0 0 0 user votes
Mathilde Slidell 1 0 1 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.