Germain Henri Hess
Germain Henri Hess ( "German Ivanovich Gess"; 7 August 1802 – 30 November 1850 ) was a Swiss-Russian chemist and doctor who formulated Hess's law , an early principle of thermochemistry . 
<triplet> Germain Henri Hess <subj> 7 August 1802 <obj> date of birth <triplet> Hess's law <subj> Germain Henri Hess <obj> named after