Vuylsteke is a known name in the south of the Province West-Vlaanderen in Belgium (mostly between Ypres and Menin). My mother is Liliane Vuysteke (born Feb 13th 1940 in Geluveld) and my grandfather is Rogier Vuylsteke (born 1913, died 1986 in Geluwe near Ypres). He was married to Suzanne Pauwels (born in 1913, still alive). My grandfather could very well be related to the Vuylsteke's which emigrated to the USA.
I'ff started a family tree on this site, so feel free to consult it from time to time... (see my home page).
Any response is welcome!