When was the man that Dewar benzene is named for born?
Dewar benzene: Dewar benzene or bicyclo[2.2.0]hexa-2,5-diene is a bicyclic isomer of benzene with the molecular formula CH. Dewar benzene:  The compound is named after James Dewar who included this structure in a list of possible CH structures in 1867. James Dewar: Sir James Dewar FRS FRSE (20 September 1842 – 27 March 1923) was a Scottish chemist and physicist.
20 September 1842