For obvious reasons, Gurunet's word of the day caught my eye: Jacquerie.
Jac·que·rie (zhä-krē')
n.

1. The uprising of the French peasants against the nobility in 1358.
2. jacquerie A peasant revolt, especially a very bloody one.
[French, from Old French jacquerie, peasantry, from jacques, peasant. See jacket.]

jack·et
[Middle English jaket, from Old French jaquet, diminutive of jaque, short jacket, tunic, from jacques, nickname for French peasants (from the name Jacques; see jack) or from Old Catalan jaco (perhaps from Arabic šakk, mailcoat).]

Jack
[From the name Jack, from Middle English Jakke, possibly from Old French Jacques, from Late Latin Iacōbus. See Jacob.

Jacob
[Late Latin Iacōbus, from Greek Iakōb, from Hebrew ya‘ăqōb, (God) has protected.]