| Reign | Incumbent | | Notes |
| 527 to 587 | Aescwine | ÆSCVVINE CENFVSING ESTSEAXNA CYNING ÆSCVVINE REX SAXONVM ORIENTALIVM | |
| 587 to ante604 | Sledda | SLEDDA ÆSCVVINING ESTSEAXNA CYNING SLEDDA REX SAXONVM ORIENTALIVM | |
| ante604 to 616/7 | Saebert | SÆBRYHT SLEDDING ESTSEAXNA CYNING SÆBRYHT REX SAXONVM ORIENTALIVM | |
| 616/7 to 617 | Sexred | SEXRED SÆBRYHTING ESTSEAXNA CYNING SEXRED REX SAXONVM ORIENTALIVM | Joint king with Saeward; killed in battle against the West Saxons |
| 616/7 to 617 | Saeward | SÆVVARD SÆBRYHTING ESTSEAXNA CYNING SÆVVARD REX SAXONVM ORIENTALIVM | Joint king with Sexred; killed in battle against the West Saxons |
| 617 to ante c.653 | Sigeberht I the Little | SIGEBRYHT SÆVVARDING ESTSEAXNA CYNING SIGEBRYHT PARVVS REX SAXONVM ORIENTALIVM | |
| c.653 to 664 | Sigeberht II the Good | SIGEBRYHT SÆVVARDING ESTSEAXNA CYNING SIGEBRYHT SANCTVS REX SAXONVM ORIENTALIVM | Saint Sigeberht; Saint Sebbi (Feast Day 29 August) |
| 660 to 664 | Swithelm | SVVIÞELM ESTSEAXNA CYNING SVVIÞELM REX SAXONVM ORIENTALIVM | |
| 664 to 683 | Sighere | SIGHERE SIGEBRYHTING ESTSEAXNA CYNING SIGHERE REX SAXONVM ORIENTALIVM | Joint-king with Sebbi |
| 664 to c.694 | Sebbi | SEBBI ESTSEAXNA CYNING SEBBI REX SAXONVM ORIENTALIVM | Abdicated in favour of his son Sigeheard |
| c.694 to c.709 | Sigeheard | SIGEHEARD SEBBING ESTSEAXNA CYNING SIGEHEARD REX SAXONVM ORIENTALIVM | Joint-king with his son Swaefred |
| c.695 to ante/c.709 | Swaefred | SVVÆFRED SIGEHEARDING ESTSEAXNA CYNING SVVÆFRED REX SAXONVM ORIENTALIVM | Joint-king with his father Sigeheard |
| 709 to 709 | Offa | OFFA SIGEHERING ESTSEAXNA CYNING OFFA REX SAXONVM ORIENTALIVM | Abdicated |
| c.709 to 746 | Saelred | SÆLRED SIGEBRYHTING ESTSEAXNA CYNING SÆLRED REX SAXONVM ORIENTALIVM | (aka Swebert) Probably joint-king with Swaefbert |
| c.715 to 738 | Swaefbert | SVVÆFBRYHT ESTSEAXNA CYNING SVVÆFBRYHT REX SAXONVM ORIENTALIVM | Probably joint-king with Saelred |
| 746 to 758 | Svvithred | SVVIÞRED SIGEMVNDING ESTSEAXNA CYNING SVVIÞRED REX SAXONVM ORIENTALIVM | |
| 758 to 798 | Sigeric | SIGERIC ESTSEAXNA CYNING SIGERIC REX SAXONVM ORIENTALIVM | Abdicated |
| 798 to 812 | Sigered | SIGERED SIGERICING ESTSEAXNA CYNING SIGERED REX SAXONVM ORIENTALIVM | then:- |
| 812 to 825 | SIGERED DVX SAXONVM ORIENTALIVM | Rank reduced by Mercian overlords |
| c.825 | Mercia defeated by Egbert of Wessex, sub-kingdom of Essex subsumed into Wessex |