My paternal grandfather, urban van Outrive, immigrated to the US in @ 1920 fr Belgium. He was @ 20 yo. I do not know of a sister of the name Delphine Eugenia. He did travel w 2 sisters, ludovica and another.
So I am not aware of the connection w Eugenia but there must be one. Kortrik is quite close to ruse ledge.
Thank you for your information!