Mark Nicholson of Barbados, the eldest in a family of six and born there; his mother was Lucy Reynold Ellcock.
[10] The Maronite scholar Ahmad Faris al-Shidyaq paid an extended visit to him there, in winter 1851–2, examining manuscripts in Arabic.
[12] The Swedenborgian traveller Rudolph Leonhard Tafel encountered there Mark Nicholson, John's youngest brother, in 1857.
[13] In 1854, Nicholson was one of the founders of the Penrith Working Men's Reading Room, with Lord Brougham and William Marshall.
[10] In 1885 Nicholson presented more than one hundred bound volumes to the library of the Royal Asiatic Society, of works in Sanskrit and other languages.
[10] John Henry Baptised at Penrith were subsequent children: William Robert (1841); Ann Elizabeth (1842); Henry Allayne (1844); Lucy Waring (1846); Edith Allayne (1849, died shortly); Frances Margaret (1852); Francis Reynold (1853); and Edward Elcock (1854).
[22][23] Nicholson's brother William moved to Cleveland, Ohio in 1848, and married Elizabeth Wilson of Canandaigua; he died in 1853.