Question: Name the mother of Edward Stafford, 4th Baron Stafford, who was the daughter of the English nobleman and politician Edward Stanley, 3rd Earl of Derby?
Sentence (from "Baron Stanley of Alderley"): Upon his death in 1850, he was succeeded as 2nd Baron Stanley of Alderley and 8th Baronet of Alderley Hall by his son Edward, who was a prominent Liberal politician and notably served as President of the Board of Trade, Postmaster General and had in 1848 been created Baron Eddisbury, of Winnington in the County Palatine of Chester, in his own right.
Relevant evidence: No