1292. Verbs of participation and mastery sometimes take the genitive in
old Latin and in poetry: as, #servom su͡i participat cōnsilī#, Pl.
_Cist._ 163, _she makes a slave a sharer in her plot_ (1263). #quā
Daunus agrestium rēgnāvit populōrum#, H. 3, 30, 11, _where Daunus was
the lord of rural folk_ (1260). So, even in prose, #potior#, which
usually has the ablative (1379): as, #totīus Galliae sēsē potīrī posse
spērant#, 1, 3, 8, _they hope they can get the mastery over the whole of
Gaul_. Especially with persons, or with the genitive plural #rērum#:
#rērum potior#, _get to be_, or often, _am, master of the situation_, or
_I am monarch of all I survey_. Similarly in Tacitus #apīscor#,
#adipīscor#: as, #arma, quīs Servius Galba rērum adeptus est#, Ta. 3,
55, _the war by which Galba became master of the throne_. In Plautus
#crēdō# sometimes has the genitive of a thing and dative of a person.