Source Data Reference for:

City = Seville
Time = 1000

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Seville	900	40,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Seville	900	42,000			Tertius Chandler	Four thousand years of urban growth	p538
Seville	900	40,000			Tertius Chandler	Four thousand years of urban growth	p468
Seville	1000	90,000			Tertius Chandler	Four thousand years of urban growth	p15
Seville	1000	90,000			Tertius Chandler	Four thousand years of urban growth	p538
Seville	1000	18,500	"btw 15,000 & 22,000"		Colin McEvedy	The New Penguin Atlas of Medieval History ISBN 0-14-051249-7	p57
Seville	1000	90,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Seville	1000	90,000			Tertius Chandler	Four thousand years of urban growth	p528
Seville	1000	100,000			George Modelski	World Cities -3000 to 2000	p55
Seville	1000	90,000			Tertius Chandler	Four thousand years of urban growth	p469