The republican regime that governed England (and, from the early 1650s, Ireland and Scotland) after the execution of Charles I in January 1649 — the Rump Parliament's Commonwealth (1649-1653) followed by Oliver Cromwell's Protectorate (1653-1659), grouped under this one Wikidata entity as the Interregnum's ruling government.
Collapsed after Oliver Cromwell's death in 1658 and the brief, weak Protectorate of his son Richard; the restored Rump Parliament dissolved itself in 1660 and invited Charles II back from exile, ending the republic and restoring the Kingdom of England.
Polity-specific monograph covering the Commonwealth and Protectorate as a single constitutional period, matching how this record is scoped.
Standard biography of the Protectorate's central figure and the ideological currents of the republic (Levellers, Diggers, the army).