I think the spelling you are looking for (Walter) might be "Iwan"
I've been looking into the Zdon side of my family and I found records of a Maryanna Zdon and a Iwan Zdon both coming here in 1910 from Galicia. Looks like two different towns though. I know My G. Grandmother had a brother Walter that she came here with but there was no spelling of "Walter" in the ellis Island records.
Denise