As I see nothing about the Prinsep/Tennyson connection I post the following, which maybe of interest.
Lewis D McCann,Milton Keynes,UK.
Descendants of Charles Robert PRINSEP
Generation No. 1
1.CHARLES ROBERT2 PRINSEP(JOHN1) was born 29 Mar 1790, and died 8 Jun 1864.He married LOUISA ANN WHITE 18 May 1839.She was born Abt. 1820.
Notes for CHARLES ROBERT PRINSEP:
Cambridge Alumni Database
Adm. pens. at ST JOHN'S, May 23, 1806. [2nd] s. of John [Alderman and merchant of London, and subsequently M.P. for Queensborough]. [B. in Pall Mall, Mar.28, 1790. School, Tonbridge.] Matric. Michs. 1807; B.A. 1811; M.A. 1814; LL.D. 1824. Adm. at Lincoln's Inn, June 19, 1811; and at the Inner Temple, June 19, 1814. Called to the Bar, June 20, 1817. Admitted an advocate to the Arches Court of Canterbury, Dec. 14, 1824. Advocate, Bengal, 1824-30. Standing Counsel to the H.E.I.C. in Calcutta, 1840-52. Advocate-General of Bengal, 1852-5. Returned to England, 1855, in broken health. Married, Feb. 18, 1839, Louisa Ann, dau. of Colonel White, of Bengal. Author, An Essay on Money and of a translation of Say's Political Economy. Died June 8, 1864, at his residence in Chiswick. (Boase, II. 1646; D.N.B.; Cant. Act Book; Law Lists; Inns of Court; G. Mag., 1864, II. 124; F. P. White.)
More About CHARLES PRINSEP and LOUISA WHITE:
Marriage: 18 May 1839
Children of CHARLES PRINSEP and LOUISA WHITE are:
i. ANNIE MARY3 PRINSEP, b. Bef. 28 Feb 1848.
ii. MARY EMILY PRINSEP, b. Abt. 1850; d. 20 Jul 1931; m. (1) ANDREW KINSMAN HICHENS; b. Abt. 1855, Compton,Guildford; m. (2) BARON,2ND HALLAM TENNYSON, 27 Jul 1918; b. 11 Aug 1852, Twickenham; d. 2 Dec 1928.
Notes for BARON,2ND HALLAM TENNYSON:
Cambridge University Alumni, 1261-1900
Adm. pens. at TRINITY, Oct. 14, 1871. [Eldest] s. of Alfred (1827), of Farringford, Freshwater, Isle of Wight. B. Aug. 11, 1852, at Twickenham, Middlesex. School, Marlborough College. Matric, Michs. 1872; Hon. Litt.D. 1899. Hon. D.C.L., Oxford; Hon. LL.D. and Litt.D., Melbourne and Adelaide. Adm. at the InnerTemple, Apr. 24, 1877. Lived with his father as his private secretary. Succeeded his father as 2nd Baron, 1892. Governor of South Australia, 1899-1902;Governor-General of Australia, 1902-4; K.C.M.G., 1899; G.C.M.G., 1903; P.C., 1905. Deputy Governor of the Isle of Wight, 1913-28. D.L. and J.P. for Hants.President of the Folk Lore Society. Married (1) June 25, 1884, Audrey Georgiana Florence, dau. of Charles John Boyle, and had issue; (2) July 27, 1918, MaryEmily, widow of Andrew Hichens, of Compton, Guildford, and dau. of Charles Robert Prinsep, Advocate-General of India. Author, Alfred, Lord Tennyson, aMemoir. Died Dec. 2, 1928. Brother of the next. (Marlborough Coll. Reg.; Inns of Court; Burke, P. and B.; Who was Who; The Times, Dec. 3, 1928.)
More About BARON,2ND HALLAM TENNYSON:
Census: 1881, Landowner
More About HALLAM TENNYSON and MARY PRINSEP:
Marriage: 27 Jul 1918
iii. JAMES CHARLES PRINSEP, b. 9 Feb 1855, Kiddepore,Calcutta.