Senensis
Could not find Senensi in Logeion dictionaries.
Senensi Proper-name adjective: neuter dative singular, Proper-name adjective: feminine ablative singular, Proper-name adjective: feminine dative singular, Proper-name adjective: masculine ablative singular, Proper-name adjective: masculine dative singular, Proper-name adjective: neuter ablative singular of Senensis
Sēnensis, e, v. Sena.
Sēnēnsis, e, s. Sēna.
Sēnēnsis, e, de Séna [Étrurie] : Cic. Br. 73.