← All surnamesByvainisBÝVAINISEtymologyAggregate surn. For by- see Býbart, for vain- - Tárvain. Feminine FORMSByvainienė / ByvainytėPronunciation/¹ˈbʲiːʋɐɪnʲɪs/SEE ALSOBybartasTarvainas