I have received a message from Germany. It is an answer to my topic (which appears just above your topic).
The sender's name is Peter Lewicki. He is only German-speaking and he took me wrongly as Wladimir Lewicki. Actually I am looking for any contact with child(ren) of Wladimir - it is all described in my topic.
Anyway, the message from Peter Lewicki has some intriguing mentions about his grandmother Leokardia Lewicki and his father's sibling (which emigrated to Australia and Brazil). If this is helpful to your own research I'll include all the details in email.