Approximately 150 peers were entitled to sit in the House of Lords at any one time during the reign. This appendix records all 262 peers who were eligible to sit during the period 1660 to 1681. Most of the information used in its compilation is derived from the Journals of the House of Lords, the DNB and The Complete Peerage. Professor Henning's three volumes on the members of the House of Commons were extremely useful for studying a lord's influence in parliamentary elections.

In addition to these works of reference, the principal sources for categorising peers on religious grounds are as follows: Calendar of State Papers Domestic: Charles II; Calendar of State Papers Venetian, 1660–1675; E. Hyde, The continuation of the life of Edward, earl of Clarendon; G. Burnet, A History of my own time; The Bulstrode Papers; Browning, Danby, vol. III; Bate, Declaration of Indulgence; Davis, ‘The “Presbyterian” opposition and the emergence of party in the House of Lords in the reign of Charles II’, in C. Jones (ed.), Party and management in Parliament, 1660–1784 (Leicester, 1984), pp. 1–35; Green, The re-establishment of the Church of England, 1660–1663; Haley, The first earl of Shaftesbury; Kenyon, The Popish Plot ; Lacey, Dissent and parliamentary politics in England, 1661–1689; Miller, Popery and politics in England, 1660–1688; Pepys, Diary; Seaward, The Cavalier Parliament and the reconstruction of the old regime, 1661–67; Carte MSS 81, fol. 83 (Lord Wharton's list of lay peers, 1660); Huntington Library, Ellesmere MSS 8418 (division list, 20 Nov. 1675); Add. MSS 28,091, fols. 161, 175, 177 (pre-sessional lists on Danby's Test Bill, April 1675). Less frequently used sources are cited in the notes.