Plato, Laws 878a

συνελθόντας, καθάπερ εἴπομεν νυνδή, τοὺς οἰκείους ἅμα νομοφύλαξιν σκέψασθαι γένος ὅτιπερ ἂν ᾖ τῶν ἐν τῇ πόλει εὐδοκιμώτατον πρὸς ἀρετὴν καὶ ἅμα εὐτυχές, ἐν ᾧ ἂν παῖδες γεγονότες ὦσιν πλείους· ὅθεν ἕνα τῷ τοῦ τελευτήσαντος πατρὶ καὶ τοῖς ἄνω τοῦ γένους ὑὸν ὡς ἐκείνων εἰσποιοῦντας, φήμης ἕνεκα ἐπονομάζοντας, γεννήτορά τε αὑτοῖς καὶ ἑστιοῦχον καὶ θεραπευτὴν ὁσίων τε καὶ ἱερῶν ἐπʼ ἀμείνοσι τύχαις γίγνεσθαι τοῦ πατρός, τούτῳ τῷ τρόπῳ ἐπευξαμένους, αὐτὸν κληρονόμον

as we said just now, must meet together and in consultation with the Law-wardens consider what family there is in the State which is pre-eminent for goodness, and prosperous withal, and containing several children. Then from the family selected they shall adopt one child on behalf of the dead man’s father and ancestors to be a son of theirs, and they shall name him after one of them, for the sake of the omen—with a prayer that in this wise he may prove to them a begetter of offspring, a hearth-master and a minister in holy and sacred things, and be blest with happier fortune than his (official) father;