What does Dannadinnis mean in Latin?

Dannadinnis, a proper noun, means “an Aquitanian name”.

What is the genitive of Dannadinnis?

The genitive singular is singular. Dannadinnis is masculine.

proper noun · masculine

Dannadinnis m (genitive singular)

genitivemasculinesingularan Aquitanian name
PROXUMUS DANNADINNIS F […]c. 1st-3rd centuries CE, Inscription from Saint-Bertrand-de-Comminges, CIL XIII 260

Perhaps from Aquitanian. It might contain the Proto-Basque element *adiN (“age, judgement”).

What does Dannadinnis mean in Latin?: Dannadinnis, a proper noun, means “an Aquitanian name”.
What is the genitive of Dannadinnis?: The genitive singular is singular. Dannadinnis is masculine.