Proper noun
Gsell (plural Gsells)
A surname.
New book length studies were not published until the 1990s however, nearly a hundred years after Stéphane Gsell 's Essai sur le règne de l'empereur Domitien (1894). Source: Internet
Three years after his wife's death, Euler married her half-sister, Salome Abigail Gsell (1723–1794). Source: Internet