The family that is the seller of the journal at the auction is Hanso, sponsors of the Dharma initiative.
Desmond meets Charles Widmore in an auction, where he's buying the journal of The Black Rock's first mate. The Black Rock is the ship that lies in the middle of the jungle in the island.
The lot number for the Black Rock journal at the auction is "2342." 23 and 42 are both in the sequence of the mythical island "numbers."
When Daniel tells Desmond that he needs to find Daniel back in 1996 at Oxford, he tells Desmond to tell the past Daniel to set the device to 2.342, oscillating at 11 Hertz. 23 and 42 are both in the sequence of Hurley's "numbers."