Slovaks

Slovaks, a Slavonic peasant people numbering some 2,000,000, subject to the crown of Hungary since the 11th century, and occupying the highlands of North-West Hungary; speak a dialect of Czech.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Slough of Despond * Slovenians
[wait for the fun]
Slawkenbergius
Sleeping Beauty
Sleipnir
Sleswick-Holstein
Slick, Sam
Sligo
Sloane, Sir Hans
Slöjd
Slop, Doctor
Slough of Despond
Slovaks
Slovenians
Sly, Christopher
Smart, Christopher
Smeaton, John
Smectymnuus
Smelfungus
Smiles, Samuel
Smith, Adam
Smith, Alexander
Smith, George