T. R. H. Thomson
Thomas Richard Heywood Thomson (1813–1876) was an English explorer and naturalist. He took part in the Niger expedition of 1841. He originally described the Allen's gallinule. Works
Captain William Allen & T. R. H. Thomson 1848: A narrative of the expedition sent by Her Majesty's government to the river Niger, in 1841, under the command of Capt. H. D. Trotter, R.N.. 2 vols. – Richard Bentley, Lontoo. T. R. H. Thomson 1854: Observations on the Reported Incompetency of the "Gins" or Aboriginal Females of New Holland, to Procreate with a Native Male after Having Borne Half-Caste Children to a European or White. Journal of the Ethnological Society of London (1848–1856), Vol. 3, 1854 (1854), ss. 243–246

References
A Narrative of the Expedition to the Niger in 1841

English naturalists
English ornithologists
1876 deaths
1813 births
British expatriates in Nigeria
People from colonial Nigeria