Clarendon is an urbanized, upper-class neighborhood in Arlington County, Virginia, located between the Rosslyn area and the Ballston area. It was named after Edward Hyde, 1st Earl of Clarendon, a leading statesman and historian of the English Civil War. The main thoroughfares are Wilson Boulevard (one-way westbound) and Clarendon Boulevard (one-way eastbound).
Edith Hyde was the 2nd Earl of Clarendon.
It's never mentioned who the 2nd Earl was. It's difficult because the text contains a similar name for the 1st Earl, so the system assumes this must be incorrect rather than neither correct/incorrect.