Which woman was the sister of XXX?
Einar Sverdrup
Einar Sverdrup was the grandson of vicar and politician Harald Ulrik Sverdrup, a grandnephew of Johan Sverdrup, a nephew of politician Jakob Sverdrup and theologian Georg Sverdrup, a half-brother of oceanographer Harald Ulrik Sverdrup, Jr., and a brother of engineer and military officer Leif Sverdrup and women's rights activist Mimi Sverdrup Lunden.