Belga
From LSJ
εἰ δὲ τύχῃ τις ἔρδων, μελίφρον' αἰτίαν ῥοαῖσι Μοισᾶν ἐνέβαλε → if someone is successful in his deeds, he casts a cause for sweet thoughts into the streams of the Muses
Latin > French (Gaffiot 2016)
Belga, æ, et Belgæ, ārum, m., Belge, Belges, habitants de la Gaule belgique (au N. de la Gaule celtique) : Luc. 1, 426 ; Cæs. G. 1, 1, 1