köken: The second component is likely と (to, “with”, explanatory particle for adverbs). The initial component may be a shortening of 漸(ようや)く (yōyaku, “at last, finally, barely”), akin to やく (yaku).
at length, at last, finally, eventually · used also as an adverbial intensifier of interrogatives to a somewhat greater degree than -nam
eş: demum, postremo
köken: From tam (“so”) + -dem (“new interpreted particle from īdem”). Compare with its earlier doublet: tamen. Both with original meaning supposedly "so(much)ever".
Tandem hīs Aenēān compellat vōcibus ultrō: …. At last [Dido] – of her own accord – confronts Aeneas, to say to him: ….