[Ger-Poland-Volhynia] Seeking Records from the Evangelical Augsburg Consistory Council in Tsarist Poyavskoi

[Peter]

Does anyone here know how I could track down the record of the
judgement of the Evangelical Augsburg Consistory Council in Tsarist
Poyavskoi regarding the dissolvement of a marriage in Plock in 1869?

Would such a record still exist? How can I find out and begin the
process of tracking down such a record?

Any help or guidance would be greatly appreciated.

Many thanks,

Peter Schmidt