Robert Flournoy Nunez, born in 1826 in Appling Co, Georgia, came to Florida during the late 1840s.  According to his 1850 Census in Hillsborough County, Robert was living in the Manatee settlement, 19th Division, which was the area around the Manatee River, now the Bradenton/Palmetto area.  It wasn't until 1855 that Manatee County was created from the southern part of Hillsborough County.  On his 1850 Census in Tampa, he was 24 and listed as a laborer.

1860 Census, Tampa
Robert, Nancy & Emma Nunez
Robert's 1860 Census in Tampa shows he was a clerk, probably in the general store of Kennedy & Darling where he was known to have worked upon arriving in Tampa in the 1850s.  This census didn't list relationships or marital status, but additional research reveals who 40 year old Nancy Nunez and 14 year old Emma Nunez were. 

According to The Blue Book and History of Tampa Pioneers, by Pauline Brown-Hazen, 1914,

During the (eighteen)forties** R. F. Nunez's sister, Mrs. Nancy Miller, a widow with child, Emma, came to Tampa to live with him. Emma grew into womanhood in Tampa and was sent to the Wesleyan Female College, from whence she was graduated.  She married J. A. Edwards, a lawyer, of Atlanta, Ga., and still lives in that city, being a widow. Her offspring are: Kate Edwards, celebrated portrait painter who has a studio in Chicago; (Joseph) Lee Edwards, of Atlanta, and Mrs. Eva Edwards Lovett, wife of Dr. Lovett, of Atlanta. 

**The absence of Nancy and Emma on Robert's 1850 Census indicates that they didn't come in the 1840s.  Robert was living in the Manatee settlement at least until 1850.   Emma was born in 1846 in Louisiana, so they probably came after Robert's 1850 Census in Tampa.

1880 Census, Marshallville, Macon Co., GA
Joseph A. & Emma (Miller) Edwards family

1900 Census, Marshallville, Macon Co., GA
Joseph A. & Emma M. (Miller) Edwards family

Here we can see that Emma's father was born in Maine. Emma and Joseph and been married for 32 years, so they married 1867-68.

1910 Census, Marshallville, Macon Co., GA
Joseph A. & Emma (Miller) Edwards

Married here for 42 years, Joseph was 70, Emma 63.  Daughter Kate was living with them, now a Studio Artist.

1920 Census, Marshallville, Macon Co., GA
Emma (Miller) Edwards

On Emma's final census she is still consistent with her birthplace and those of her parents.  Emma was a writer in her final years.  Kate had probably moved to Chicago where she opened a studio by 1914.  Emma was living as a lodger with Ida F. Wade, also a widow. 
 

EMMA MILLER EDWARDS Death Cert,  dob Aug. 24, 1846, LA,    dod Mar 17, 1920 Atlanta, GA
Widow of J. A. Edwards  Father: Steven Miller of Maine.  Mother: Nancy Nunez of GA.
Informant: Eva Edwards Lovett (Emma's daughter.)