HerschelGerman, Jewish Diminutive form of Hirsch 1 or Hirsch 2. A famous bearer was the British-German astronomer William Herschel (1738-1822), as well as his sister Caroline Herschel (1750-1848) and son John Herschel (1792-1871), also noted scientists.
JinksEnglish Means "son of Jenk", a short form of Jenkin, a diminutive of Jen, itself a Middle English form of John.
RousseauFrench Diminutive of Roux. A famous bearer was the philosopher Jean-Jacques Rousseau (1712-1778) whose ideas influenced the French Revolution.
TrudeauFrench (Quebec) From a diminutive of the given name Thouroude, a medieval French form of the Norse name Torvald. This name has been borne by two Canadian prime ministers, Pierre Elliott Trudeau (1919-2000) and his son Justin Trudeau (1971-).