Searched full name with no result, also there were not any similiar sounding names. Searched each name separtely and researched (google) nicknames- with no result. Also searched with the 'place', using both Ottilienstrasse and Otylii, the location of his school. We also attempted to find links with people with the same surname, however there were not many available that seemed relevant.
I also came to the same roadblocks that the other researcher did, and I am unable to find anyone who has anything similar or with nicknames. I also searched using the middle name in case he went by that name, but there were no records of an "Olek" either.
According to Behind the Name, Olek is simply a Polish nickname for Aleksander.
http://www.behindthename.com/name/olek