"Warsaw, in the Povenkovsky fifth precinct"#warsaw

Our Jewish Family History Research

Hi all:
The following is taken from a death registration:
"It took place in Warsaw, in the Povenkovsky fifth precinct, in the office of an official of the civil status of non-Christian confessions on March 11 (24), 1916."
I would appreciate help in clarifying  "Povenkovsky".
I have not come across that location name before. 

Many thanks in advance.


Jacqueline GRUSZECKI
Toronto, Ontario, Canada
From Warszawa, and possibly Kotłówka, Zelechow

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