[Ger-Poland-Volhynia] Location of Belgatow and Janowka

[Randy Marks]

Jerry recently posted a link to a map for Rozyszcze Parish .
This caught my eye because I have been trying to find a map that shows the towns where a great uncle (Gustav Marks) was born and died.
According to the Odessa death records, Gustav was born in Belgatow and died about the age of 1 years on Nov 26, 1882 in Janowka.
The map Jerry posted shows a town of Janowka located approx. 50 deg. 59' North and 42 deg 57' East..

Is there a way to determine if this Janowka on the map is in fact where my great uncle died?

Does anybody know where I might find a similar map that shows Belgatow?

Thanks much,
Randy Marks

Researching the following names:
  MARKS (August, Mariane/Mathilde, Amalie/Emilie, William, August Jr., Adolph, Leopold, Andrew, Martha, Albert, Gottfried)
  KIRSCH (Mathilde)
  TOENNES (Edgar, Albert)
  KIRCHER / KIERCHER (Frederick, Martha, Magdalena/Lena)
  SCHOOK (Magdalena/Lena/Martha)
  WELTER (Kate/Ella)