A sonnet, one translated into a Finno-Ugric language (8)

I believe the answer is:

estonian

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'a finno-ugric language' is the definition.
'estonian' can be an answer for 'language' (I've seen this before). I'm unsure of the 'a finno-ugric' bit.

'a sonnet one translated' is the wordplay.
'one' becomes 'i' (Roman numeral).
'translated' indicates an anagram.
'a'+'sonnet'+'i'='asonneti'
'asonneti' with letters rearranged gives 'ESTONIAN'.

'into' is the link.

Can you help me to learn more?

(Other definitions for estonian that I've seen before include "E. European" , "Person from Tallinn, say." , "Native of a Baltic republic" , "Eastern Europe" , "Eg, native of Tallinn" .)

I've seen this clue in The Irish Times.

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