I'm not familiar with Elizabeth. I've not seen anythig close to what you mentioned in George Daffin's lines. I did find this on Ancestry:

Database: 1850 United States Federal Census
Viewing records 1-1 of 1
-------------------------------------------------------------------------------
Cash, Elizabeth
State: Alabama Year: 1850
County: Conecuh Roll:
Township: Unknown Townships Page: 0
Image:
Age: 45 Birth State: VA
Month: JUL Cause of Death: UNKNOWN
------------------------------------------------------------------------------
The Henderson Family - from Joseph of Revolution
Entries: 5559 Updated: Sat Aug 9 04:47:06 2003 Contact: A Henderson Rupert
--------------------------------------------------------------------------------
ID: I5068
Name: Elizabeth W Daffin
Sex: F
Birth: 1805 in Virginia
Death: JUL 1850 in Conecuh County, Alabama
Note:
here is an entry in Deed Bok 49 p. 447 dated 17 June 1848 which indicates Elizabeth W. Cash, wife of Corroden B. Cash had children (not named).

Not certain this Elizabeth Cash is the mother of Jeremiah & Whitfield, however very likely. Do not know her last name, however she may be connected to Churchill Jones who also moved from Caroline Co Va to Conecuh Co Alabama. She also may be Elizabeth Daffin Cash and it appears she left her husband Corroden back in VA if so.

Cash, Elizabeth

State: Alabama Year:
1850
County: Conecuh Roll:

Township: Unknown Townships Page:
0
Image:


Age: 45 Birth State:
VA

Month: JUL Cause of Death:
UNKNOWN


Cash, Jeremiah (this is Jeremiah age 10)

State: Alabama Year:
1850
County: Conecuh Roll:
M432_3
Township: Unknown Townships Page:
357
Image: 705


Marriage 1 Corriden B. Cash b: 1800 in Caroline Co, Va
Married: 20 JUN 1826 in Caroline County, VA
Children
Martha Cash b: 1838 in Caroline Co, Va
Whitfield Cash b: 1840 in Culpepper Co, VA
Jeremiah Cash b: 1843 in Culpepper Co, VA
Virginia Cash
Mary A Cash b: 1838 in Caroline Co, Va
Susan Cash b: 1835 in Caroline Co, Va