That hasn't been revealed yet. It has been hinted at that they don't have a mother, and are actually clones of Brock and Rusty.
BIANCA
Yes. Eva Dean, 32, survived with her children on lifeboat #10 or #13.
They were born in Lawrence, Kanas. But after the death of their mother, they moved around a lot.
Her father died. & her mother remarried after the sank but her siblings survived
Her family decided to travel to America in order to own a tobacco shop. However, due to a coal strike, they were transferred to the Titanic in steerage class. Millvina Dean was 2 months old when on the ship. In the sinking, her father died but she, her brother, and her mother survived.
The Venture Bros- - 2003 Perchance to Dean 4-3 was released on: USA: 1 November 2009
The Venture Bros- - 2003 Are You There God It's Me Dean 1-9 was released on: USA: 2 October 2004
The Venture Bros- - 2003 Bright Lights Dean City 4-13 was released on: USA: 10 October 2010
BIANCA
Mary Robinson ...
Aik and tiana
Aik and tiana
Nichole Levy
Mary myers
Thomas J. Dean has written: 'New venture formations in United States manufacturing' -- subject(s): Mathematical models, Entrepreneurship, New business enterprises, Manufacturing industries, Industrial location
Dean Martin adopted Sasha after marrying her mother, Catherine Hawn. The marriage lasted three years, until 1976.
His biological Parents were called Mavis and Colin Dean. But after his mother left when he was 3, Colin married a woman called Betty (Chris fondly calls her Tee) Chris has always refereed to Tee as his Mother.