B' e ceimigear agus luchd-saidheans cognatach à [[Sasainn]] a bha ann an '''Christopher Longuet-Higgins'''.
Rugadh e ann an [[Lenham]], [[Kent]] ann an [[1923]] agus bha e na sgoilear agus na bhall a' chòisire-ciùil aig Colaiste [[Winchester]] aig an aon àm ri [[Freeman Dyson]], [[James Lighthill]] (a bhiodh cudromach ann an cathair-eaglaiseachdraidh [[Winchestertuigse inntealta]]) agus a bhràthair [[Michael Longuet-Higgins]].<ref>{{iomradh iris | ainm = Richard L. | sloinneadh = Gregory | ùghdar_eile = Murrell, John L. | iris = Biogr. Mems. Fell. R. Soc. | ceann-là = 2006 | leabhar = 52 | duilleagan = 149 | doi = 10.1098/rsbm.2006.0012 | tiotal = Hugh Christopher Longuet–Higgins. 11 April 1923 — 27 March 2004 }}</ref> Chaochail e ann an [[2004]].<ref>{{iomradh iris | ainm = Mark | sloinneadh = Steedman | url_tasgaidh = https://web.archive.org/web/20170510191328/http://aisb.org.uk/publications/aisbq/AISBQ119.pdf | ceann-là_tasgaidh = 2017-05-10 | url = http://www.aisb.org.uk/publications/aisbq/AISBQ119.pdf | tiotal = OBITUARY: Christopher Longuet-Higgins | cànan = Beurla | ceann-là_inntrigidh = 2020-07-21 | foillsichear = Society for the Study of Artificial Intelligence and Simulation of Behaviour| iris = AISB Quarterly | ceann-là = 2005 | àireamh = 119}}</ref>
