Which two people in Group A should be in Group B?
Reverend William Spooner
Julius Caesar and Ambrose Burnside fit into Group B, because they have things named after them.
Julius Caesar- The month July
Ambrose Burnside- Sideburns
Reverend William Spooner- Spoonerisms
Francois Mansard- The Mansard Roof
Pierre Magnol- The Magnolia
Georg Ohm- The Ohm, a unit of electrical resistance
Today's brain teaser courtesy of Braingle.com.