Could you be referring to Dr Madison Fisk/e, Barlow Fisk/e, & Milton Fisk of White Co TN? Madison was Moses nephew, son of Nathaniel. Barlow was Madison's nephew & Nathaniel's grandson & Milton is Barlow's son. Also the only 2 Celina Fisks in TN in the 1800's was daughter of Professor Moses Fisk. Celina (1814 - 1884) sometimes misspelled Selina married George Christian Jr. The town of Celina TN was named in her honor. She is my Gr Gr Gr grandmother. The other was daughter of Ormel Fisk & granddaughter of Prof Moses Fisk.