Alzbieta was Betty, & Kastanzie looks like her sister Kastanni (Connie)- the names/dates definitely look like my family- much obliged, sir/madam.
Three questions- You mention *2* deaths, but only list Agnieskas'. Was there another? Further, you say she died at 31, but I have picture of her & Jonas (so I'm told) looking much older than that. Lastly, would you tell me where you found this info?