1.  Marriage Record:

2.  1800 Census Index/Images (online at Ancestry.com):  the entire 1800 VA census was lost.

3.  1810 Census Index/Images (online at Ancestry.com, Image #21 of 28; extracted by Diana Gale Matthiesen):

1810

VA

Richmond Co.

Roll 70

p. 345/406

Ln. 16

James Rose

10010-10010-01

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	9 or under	1800-1810	= Son A
1 male	26-44	1765-1784	= James
1 female	9 or under	1800-1810	= Daughter A
1 female	26-44	1765-1784	= Winifred
1 slaves	all ages	by 1810	= ?

Listed two lines below John SANDY, who is one line below Winnie's sister, Nancy SANDY.  I don't know who John SANDY is. 

4.  1820 Census Index/Images (online at Ancestry.com, Image #23 of 31 — list was roughly alphabetized; extracted by Diana Gale Matthiesen):

1820

VA

Co.

- Twp.

Roll M33_135

p. 293

Ln. 13

Rose James

000101-10101-0-200

no slaves

These data indicate:

1820   Roll  p  line
2 Rose Margaret 000000-000011-0-500 1154-1125
13    
 

No., Race, Gender	Age Class	Therefore Born	Individuals Inferred
white male	9 or under	1810-1820	=
white male	10-15	1804-1810	=
white male	16-18	1801-1804	=
white male	19-25*	1794-1801	=
white male	26-44	1775-1794	=
white male	45 or over	in or bef. 1775	=
white female	9 or under	1810-1820	=
white female	10-15	1804-1810	=
white female	16-25	1794-1804	=
white female	26-44	1775-1794	=
white female	45 or over	in or bef. 1775	=
-	foreigners not naturalized
-	people engaged in agriculture
-	people engaged in commerce
-	people engaged in manufacture
male slave	13 and under	1806-1820	= ?
male slave	14-25	1794-1806	= ?
male slave	26-44	1775-1794	= ?
male slave	45 or over	in or bef. 1775	= ?
female slave	13 and under	1806-1820	= ?
female slave	14-25	1794-1806	= ?
female slave	26-44	1775-1794	= ?
female slave	45 or over	in or bef. 1775	= ?
*In the 1820 Census, the third column is age class 16-18 and the fourth column is age class 16-25; therefore, any individual in column three is duplicated in column four.  By subtracting the number in column three from the number in column four, you can create an age class 19-25.

Also in Westmoreland County:  Bennett ROSE, Joel S. ROSE, and Margaret ROSE.
 
 

.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com). 
A file there includes this note:

Page 56; 2 July 1832 Last Will and Testament of Mason Sandy decd. Contested by James Rose and Winnefred his wife, who was Winnefred Sandy, daughter of said Mason. John Sandy exor. Will accepted for probate.

.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).