If we go back a little in history, in the 17th century, we can already mention Philippe Naudé the Elder and Philippe Naudé the Younger, they are father and son, both born in Lorraine, both mathematicians. Closer to home, in the history of fathers and sons, we find François and Jacques Chérèque, a large family of trade unionists from Lorraine. The father was a minister, not the son. But the father was only Deputy Secretary General of the CFDT while the son will be Secretary General and No. 1 of the CFDT from 2002 to 2012. Note also Sadoul, Charles, Raonnais and writer, and Georges, his son, Nancéien and film historian. We do not forget the Platini, Aldo and Michel, or the Prouvé, Victor and Jean.