From the internet:
AI Overview
The surname "Ciemnyjewski" appears to be a variant or misspelling of the Polish surname "Ciemielewski". While "Ciemielewski" is a recognized surname, "Ciemnyjewski" is less common and may be due to variations in transcription or pronunciation. Ancestry.com and Wikipedia do not list "Ciemnyjewski" as a known surname. However, a search on Mimir Group for "Ciemnyjewski" indicates that it is used as a surname by Eugene Ciemnyjewski.
The Polish surname "Ciemielewski" likely originated from the Polish word "ciemny" (meaning dark or shadowy), suggesting a connection to a place or individual with dark features or a dark occupation. The surname can be found with variations in spelling and pronunciation due to historical and cultural influences.
I asked a native Polish speaker and they confirmed that Ciemny means dark.
"ewski" is a surname suffix (male version).
Presumably the "J" comes from a spelling variation.
Tony
