I think that it was the same Valentinas Gustainis who was related with Donna Fuller.
There are very detailed Lithuanian map on line with villages names if at least one house is remained up to now, however you will not find villages fully destroyed. Go tohttp://www.maps.lt/default.asp?l=2
click on third window, enter Vinksnupiai place name and click on Search button. Place name or some place names will pop up in left side of monitor. Then select the place name and a map will come up. You may enter inksnupiai instead of Vinksnupiai or any part of place name, the search engine will provide all place names in Lithuania with this part of place name. At least 2 letters are required. If you enter upiai, about 102 place names will come up.
There are Ellis Island database on line with original ship manifests scanned. You may enlarge manifest and it is readable. There is father's name recorded, address, final destination, where was born.
Go to http://www.ellisisland.org
The manifest states that Jurgis was from Lipki, Suwalki gub, Russ. Lipki is a Russian spelling, Lithuanians spell this place name Lypkai and this place name you may find on the map. Village Lypkai is next to village Pronskabudis, however village Pronskabudis you will not find on this modern map on line, Pronskabudis was fully destroyed.