:) Great!

на дятлов похоже…
а на печати написано "Ян Заремба"?

Илле: My signature : the Chinese characters "Tsha Ren-bo" = Za-rem-ba
The red seal stamp reads : "The Studio of Zaremba"

Jan Zaremba: Thanks.
What's the meaning of Tsah Ren Bo?

"Tsha Ren-bo" is ther chinese pronanciation of "Zaremba"; I got this name from my teacher.
Each Chinese character is a single syllable. The Chinese language is limited to 411 syllabls. The sound "rem" for instance, does not exist. But we have "rem", which is close enough. In addition to sounding right, the sound should represent meaning.
The literal meaning of these Chinese characters is: A noble person who considers compassion.

Excellent!