Fanni
Fanni is a Latin form of Fannius, meaning “Fannius (C. Fannius, Laelius' son-in-law, speaker in Cicero's dialogues)”. It is the genitive singular masculine noun.
Found 32 times in the Latin texts on Socratos.
Where it is used
Cicero, Pro S. Roscio Amerino 11: te quoque magno opere, M. Marci Fanni, quaeso ut, qualem te iam antea populo Romano praebuisti, cum huic eidem quaestioni iudex praeesses, talem te …
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.