Willebrord Snell, Dutch astronomer and mathematician (died 1626)
Willebrord Snellius (born Willebrord Snel van Royen, also Willebrord van Roijen Snell, commonly known simply as Snellius and Snell, was a Dutch astronomer and mathematician.
Willebrord Snell, Dutch astronomer and mathematician (died 1626)