Oswine was king of Kent, reigning jointly with Swæfberht and Swæfheard from 688 till 690.
[1] Oswine is known from charters: one of which, is dated 26 January 690, and was witnessed by Swæfheard, and implies Oswine's descent from Eormenred;[2] and a third, which is undated, but again witnessed by Swæfheard, expresses Oswine's gratitude for his restoration to the kingdom of his fathers (gratias refero miserenti Deo omnipotenti qui confirmauit me in regno patrum meorum et dedit mihi domum cognationis mee).
However, he abdicated in 688 and went on a pilgrimage to Rome, possibly because he was dying of wounds suffered while fighting on the Isle of Wight.
[6] A charter of January 690 granting land in Sturry to Æbba, abbess of Minster-in-Thanet states that they were closely related ("carnali propinquitate proxime").
[5] In a charter of July 689, Oswine, king of Kent, granted to St Peter's Minster and Abbot Hadrian 1 sulung (aratrum) of iron-bearing land, formerly belonging to the royal vill at Lyminge, Kent.