[Борисович]

The last of the available watercolors Zhukovsky adds arguments for Rudolph Kazimirovich .
Watercolor signed «Riche Persan» ( rich Persian) . This inscription shows convincingly that the capital letter in writing initials (name ): R. Joukovski and the first letter in the word «Riche» one - «R».
When asked about the provenance of paintings , I was told that they came from the Russian in Paris, which they inherited («It comes from the" succession "of a russian man in Paris»).

Добавлено через 21 минуту
Signature RZ meets at RK Zhukovsky in the engravings in a book published in St. Petersburg in 1842 «Niezabudka»
On the " My account" sold prints of Zhukovsky RK books Viskovatov AV historical description of clothing and weapons of the Russian troops , with pictures , drawn by imperial order : 1841-1862 .

Maybe someone saw him cycle of clothing and weaponry of the Cossacks to the design of Zhukovsky RK ?