, ▁etc . ▁The ▁exact ▁belief s ▁att endant ▁on ▁the ▁original ▁assignment ▁of ▁such ▁names ▁remain ▁unknown . ▁ ▁Reg ard less ▁of ▁the ▁language ▁of ▁origin ▁of ▁D ion ys os ▁and ▁Ap oll on , ▁the ▁- ios /- ius ▁suffix ▁is ▁associated ▁with ▁a ▁full ▁range ▁of ▁end ings ▁of ▁the ▁first ▁and ▁second ▁decl ension ▁in ▁the ▁Greek ▁and ▁Latin ▁languages . ▁The ▁names ▁may ▁thus ▁appear ▁in ▁ancient ▁writing ▁in ▁any ▁of ▁their ▁cases . ▁D ion ys ios ▁itself ▁refers ▁only ▁to ▁males . ▁The ▁femin ine ▁version ▁of ▁the ▁name ▁is ▁D ion ys ia , ▁nomin ative ▁case , ▁in ▁both ▁Greek ▁and ▁Latin . ▁The ▁name ▁of ▁the ▁plant ▁and ▁the ▁festival , ▁D ion ys ia , ▁is ▁the ▁neut er ▁pl ural ▁nomin ative , ▁which ▁looks ▁the ▁same ▁in ▁English ▁from ▁both ▁languages . ▁D ion ys i ou ▁is ▁the ▁mascul ine ▁and ▁neut er ▁gen itive ▁case ▁of ▁the ▁Greek ▁second ▁decl ension . ▁D ion ys ias ▁is ▁not ▁the ▁- ios ▁suffix . ▁ ▁Although ▁in ▁most ▁cases ▁transm uted , ▁the ▁name ▁remains ▁in ▁many ▁modern ▁languages , ▁such ▁as ▁English ▁Dennis ▁( Den ys , ▁Den is , ▁Den ise ). ▁The ▁latter ▁names ▁have ▁lost ▁the ▁suffix ▁altogether , ▁using ▁Old ▁French ▁methods ▁of ▁mark ing ▁the ▁femin ine , ▁Den ise . ▁The ▁modern ▁Greek ▁( clos est ▁to ▁the ▁original ) ▁is ▁D ion ys ios ▁or ▁D ion ysis .