René

the first name is the answer

r18e5n14e5=42

René = 42

h8y25p16o15t20h8e5s19e5=121v22e5r18i9t20e5=79

hypothèse vérité = 121 79 = 42

d4e5s19c3a1r18t20e5s19=94f6a1u21x24=52

descartes faux = 94 52 = 42

In French, accents ignored, RENÉ is 42 on its own.

HYPOTHÈSE minus VÉRITÉ, hypothesis minus truth, is 42. DESCARTES minus FAUX, false, is 42. Three routes to the same number through the language he thought in.

Rule: French, a=1 … z=26, accents ignored.

type a word

a=1 … z=26, letters only. If it comes to 42, 91 or 133 the page will say so.