Sorry, I did a mistake. It seems that Valentinas Gustainis was born in Vinksnupiai village, Kazlu Ruda area, but not in Vilkaviskis district.
I have found this data inhttp://www.kazluruda.lt/?menu=1&sub=5&lang=lt
This Vinksnupiai village is very close to Lypkai village and you may find it on the map on line http://www.maps.lt/default.asp?l=2
, enter Vinksnupiai, click on search button, then click on Other...:1 on the left side of monitor below line "Objects found: 2 .