Deletion of Leszek Gondek

Comment: 10-year-old ORPHAN page about a historian who published in Polish.  In those 10 years the only substantive material added to the page is this unsourced text: https://en.wikipedia.org/w/index.php?title=Leszek_Gondek&diff=536654535&oldid=527833189, itself arguably a violation of . What I can verify is that although he wrote about a period , Poland during WWII, about which oceans of ink have been spilled, I am not finding him cited in non-Polish books on the topic in the Latin alphabet.  This appears to be part of something approaching a walled garden, a literature in Polish about Poland during the Second World War that is not in conversation with the literature about WWII published in French, German and English
Stance: delete
Cited policy: Wikipedia:What Wikipedia is not (WP:NOTMEMORIAL)