1) Gypsum or plaster, used to give walls a white coat.
1299 Emendacio domorum: Pro sparstan ... de Rither, Bolton Priory
1395 Item pro sperstane, Whitby
1481 quandam querruram de plaster vocatam sperre stone, Ripon. The minor place-name le Sparstoncliff or -clyff was listed by Smith in Scriven in 1439 and 1469, with a note of purchases of petrarum voc. sparstonez.