D.H. (att. to Richard Gought), 'Pictures in Warwick Castle', Gentleman's Magazine , LXVIII, October 1798, p. 836.
'Pictures and Articles of Curiosity', Inventory of the Contents of Warwick Castle , Warwickshire Record Office CR1886/466, MS., circa 1800, n.p., listed hanging in the Gilt Room.
W. Field, An Historical and Descriptive Account of the Town and Castle of Warwick , Warwick, 1815, p. 216, as 'Henrietta Maria - wife of Charles I - whole length - by Vandyck', listed hanging in the Little Study.
Rev. J. Romney, Memoirs of the life and works of George Romney: including various letters , London, 1830, p. 133.
J. Smith, A Catalogue Raisonn é of the Works of the Most Eminent Dutch, Flemish and French Painters , London, 1831, III, p. 128, no. 462.
S. Woodburne, Notes on the Paintings at Warwick Castle , Warwickshire Record Office CR1886/783/12, Ms., 1832, no. 38, listed hanging in the 1st Drawing Room - ‘very fine quality of Van Dyck'.
G.F. Waagen, Works of Art and Artists in England , London, 1838, III, p. 155.
C.W. Spicer, The Vitruvius Britannicus, Part V, History of Warwick Castle , London, 1844, p. 36, listed hanging in the Gilt Room.
H.T. Cooke, Warwick Castle and its Founders , Warwick, 1846, II, p. 5, listed hanging in the Gilt Drawing Room.
H.T. Cooke, An Historical and Descriptive Guide to Warwick Castle etc. , Warwick, 1847, p. 56, listed hanging in the Gilt Drawing Room.
Cooper's, History of Warwick and Guide to the Castle , Warwick, 1850, p. 86, listed hanging in the Gilt Room.
W. Kendall, Inventory of Warwick Castle , Warwickshire Record Office CR1886/783/16, Ms., 1853, listed hanging in the Gilt Drawing Room.
G.F. Waagen, Treasures of Art in Great Britain , London, 1854, III, p. 213.
Inventory of Warwick Castle , Warwickshire Record Office CR1886/703, Ms., circa 1870, listed hanging in the Gilt Drawing Room.
F.E. Warwick, ‘Warwick Castle', The Pall Mall Magazine , XI, January-April 1897, p. 37, as 'the bust by Van Dyck, the rest completed by Sir Joshua Reynolds', listed hanging in the Cedar Drawing Room.
Inventory of the contents of Warwick Castle , Warwickshire Record Office CR1886/703, Ms., 1900, listed hanging in the Cedar Drawing Room.
L. Cust, Anthony Van Dyck. An historical study of his life and works , London, 1900, p. 266.
The Countess of Warwick, Warwick Castle & its Earls from Saxon times to the present day , London and New York, 1903, II, p. 808.
‘Warwick Castle, Warwickshire. The seat of the Earl of Warwick - II', Country Life , June 1914, p. 845, illustrated hanging in the Cedar Drawing Room.
G. Gluck, Van Dyck. des Meisters Gemälde, Klassiker der Kunst , Stuttgart, 1931, p. 560.
O. Millar, 'Notes on three pictures by Van Dyck', The Burlington Magazine , CXI, July 1969, p. 417, as 'a very good version of the Barberini portrait'.
E. Fahy, in E. Fahy and F. Watson, The Wrightsman Collection. Paintings, Drawings, Sculpture , New York, 1973, V, p. 306, as 'one of the two best versions made in England before the Barberini portrait was sent to Rome'.
J. Farington, The Diary of Joseph Farington , ed. K. Garlick, A. Macintyre and K. Cave, New Haven and London, 1978-84, V, p. 1588, seen at Warwick Castle, 15 August 1801.
D. Buttery, ‘George Romney and the Second Earl of Warwick', Apollo , August 1986, pp. 108-109.
O. Millar, in S.J. Barnes, et al. , Van Dyck. A Complete Catalogue of the Paintings , New Haven and London, 2004, p. 528, no. IV.124.
E. Fahy, ed., The Wrightsman Pictures , New York, 2005, p. 124, listed under versions/copies.