Dunboyne 1968, pp. 16–17. "Butler Family Tree condensed" Dunboyne, Patrick Theobald Tower Butler, Baron (1968). Butler Family History (2nd ed.). Kilkenny: Rothe House.{{cite book}}: CS1 maint: multiple names: authors list (link)
Meehan 1882, p. 211. "... his [Ormond's] second son, lord Richard Butler, with the earl of Roscommon, and Sir James Ware, had been sent to England as hostages for his performance of the articles in consideration of which he was to surrender Dublin to the English rebels." Meehan, Rev. Charles Patrick (1882). The Confederation of Kilkenny (New revised and enlarged ed.). Dublin: James Duffy. OCLC224157081.
Chester 1876, p. 215. "1685/6 Jan. 27 Richard, Earl of Arran; [in the Abbey]" Chester, Joseph Lemuel (1876). Registers of Westminster Abbey. London: Private Edition. OCLC1140248. – Marriages, baptisms and burials from about 1660 to 1875
Meehan 1882, p. 211. "... his [Ormond's] second son, lord Richard Butler, with the earl of Roscommon, and Sir James Ware, had been sent to England as hostages for his performance of the articles in consideration of which he was to surrender Dublin to the English rebels." Meehan, Rev. Charles Patrick (1882). The Confederation of Kilkenny (New revised and enlarged ed.). Dublin: James Duffy. OCLC224157081.
Chester 1876, p. 215. "1685/6 Jan. 27 Richard, Earl of Arran; [in the Abbey]" Chester, Joseph Lemuel (1876). Registers of Westminster Abbey. London: Private Edition. OCLC1140248. – Marriages, baptisms and burials from about 1660 to 1875