Hey Randy, I found this. Its all off the internet so you should double check all this. Hopefully it will provide you some leads.

(P.S.__ Got the info I was waiting on from Ron Skellie last night. I'm going to call the La. Hwy Dept. & the La. Office of Tourism today. Will let you know what I find out in regards the Ponchatoula marker.)
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Source: http://www.familysearch.org/Eng/Search/frameset_search.asp

(Generation 1?)
John BRIMBERRY
Birth: Abt. 1786 South Carolina
Spouse: Mary ARCHER
Marriage: 28 May 1820, Hancock, Georgia

(Generation 2?)
John F. Brimberry
Birth: 1826, Saint Tammany, Louisiana
Death: 1872
Spouse: Mildred Robertson
Marriage: About 1850, Saint Tammany, Louisiana
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Source: http://worldconnect.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=6459790&id=I12731

John F BRIMBERRY
Birth: 1826
Death: 1872
Marriage: Mildred ROBERTSON b: 12 JUN 1830
Married: 1853
Children:

Emma Jane BRIMBERRY b: 1855

Nena Gertrude BRIMBERRY b: 1856
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According to this website John Brimberry was Mildred Robertson's 2nd husband. This page provides some info on their children. It looks like she may have later married a Cooper.

Source: http://members.aol.com/ronsbeatty/rambo44.txt