Bybartas

Aggregate surn. For by- cf. lit. Bý-bert, Bi-gáila, Bý-gaila, Bi̇̀-vai̇̃nis, Bý-vai̇̃nis (see); Bý-mantas ¹; Ave. Bigedis, Bygerde, Byjawthe, Byot, Bykant, Bytawte ². The origin of Sando by-, bi- is unclear. Connection with lit. dialect biti „buvo“, Latv. bija „buvo“ ³ also raises doubts, because the apophonic variant of the root of the verb to be is grammatically too limited - it is found only in certain forms of the past tense. The Prussian language does not seem to have such apophony at all, but pers.n. su by- (bi-) are among the most popular in Prussian. So, wouldn't the hypothesis of A. Salis ⁴ be more reliable, connecting the sand with lit. to fear, Latv. bíties, cf. yet biātwei „bijoti“. Avoidance lit. pers.n. sanda by-, bi- to connect with bijóti could be supported, among other things, by the fact that until now, it seems, no clear formation lit. compound pers.n., one or the other of which undoubtedly could have been associated with an appellative meaning fear, fear, etc. ⁵. However, Lieut. in the list of such pers.n. is - it's surn. Bugvilà, Bugvi̇̀las ⁶. Hence, the semantic connection of by-, bi- with bijóti, etc. can be justified. By the way, some lit. pers.n. with by-, specifically, Bý-nation, fits well with a certain structural Indo-European pattern: „tas, kuris..“, in this case - „tas, kuris bijo tautos“ ⁷.