νέννος
From LSJ
μή μοι θεοὺς καλοῦσα βουλεύου κακῶς· πειθαρχία γάρ ἐστι τῆς εὐπραξίας μήτηρ, γυνὴ Σωτῆρος· ὦδ᾽ ἔχει λόγος → When you invoke the gods, do not be ill-advised. For Obedience is the mother of Success, wife of Salvation—as the saying goes.
English (LSJ)
ὁ,
A mother's or father's brother, uncle, Eust.971.26; but, mother's brother, Poll.3.22, cf. IG12(3).1628 (Thera), cj. in Epigr. ap. Plu.2.1033e; or (in poetry), mother's father, Poll.3.16 (v.l. νόννος, q.v.); cf. νάννας, νίννη.