Prohibition of Marriage with a Stepchild's Former Spouse

Notes

1. §23.2.15.prnon oportet — The impersonal verb `non oportet` governs two accusative-with-infinitive clauses in parallel as its logical subjects: first, `uxorem... coniungi...`, and second, after the negative conjunction `nec` (where `oportet` is understood), `nouercam... conuenire...`.
2. §23.2.15.preius qui priuignae maritus fuit — The relative clause `qui priuignae maritus fuit` modifies the genitive pronoun `eius` (possessive genitive qualifying `nouercam`, literally "the stepmother of him"). Thus, the phrase means "the stepmother of him who was the husband of the stepdaughter." The implied partner with whom she is forbidden to enter into marriage (`in matrimonium conuenire`) is this same person ("him").