He served at the siege of Sebastopol in 1854-55, and was wounded in the trenches (The New Army List, and Militia List; Exhibiting the Rank, Standing, and Various Services of Every Regimental Officer in the Army… including the Royal Marines. No. LXXVIII. 1 April, 1858. London: John Murray, 1859, p. 133). He wrote Letters from Camp during the Siege of Sebastopol. London: R. Bentley, 1894.

He was Sir J. Simeon’s cousin (see Letters, p. 73 & 79); Lear had met Simeon through the Tennysons (Selected Letters, p. 298).

Col. Campbell often walked with Lear, who often mentions him in his letters to C. Fortescue.

1.i.58, 6.i.58, 7.i.58, 13.i.58, 14.i.58, 23.i.58, 16.ii.58, 17.ii.58, 19.ii.58, 21.ii.58, 8.iii.58, 12.iii.58, 30.ix.61, 16.xii.61.