A minor Anglo-Saxon kingdom occupying the region between the Humber and the Wash (roughly the northern part of modern Lincolnshire), centered on Lincoln (Roman Lindum) and known mainly through its own regnal list and its position as a contested borderland between Northumbria and Mercia.
Never fully independent within the historical period — dominated alternately by Northumbria and Mercia — and was permanently absorbed into Mercia in the 8th century.
The atlas holds 3 border frames for Kingdom of Lindsey — the shape you scrub through changes in 600 · 628 · 653.
Standard edited volume on the formation of the minor Anglo-Saxon kingdoms, including Lindsey.