The 1900 census says 1849 and her tombstone says 1850; the census is more likely correct than the stone.

1.  Marriage Record:

2.  1880 Census Every-Name-Index/Images (online at Ancestry.com, Image #15 of 53):  28 Filbert Alley, Lancaster City (Ward 8), Lancaster Co., PA, Roll T9_1143, p. 211C, PN 15, SD 2, ED 159, enumerated 3 Jun 1880, official enumeration date 1 Jun 1880 (extracted by Diana Gale Matthiesen):

1880:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

1

2

3

4

5

6

8

9

10

13

22

23

24

25

26

*

28

118

124

Kulp George

W

M

28

/

Laborer

PA

Ger

Ger

____ Theresa

W

F

29

Wife

/

Keeping house

/

/

Eng

Ire

Ire

____ George

W

M

3

Son

/

PA

PA

Eng

____ Ella

W

F

1

Dau

/

PA

PA

Eng

McEvory Lizzie

W

F

24

Boarder

/

Works in cotton Mill

Eng

Ire

Ire

*Filbert Alley

Lizzie is Theresa's sister.

3.  1890 Census:  the 1890 Census Population Schedules were destroyed.

4.  1900 Census Index/Images (online at Genealogy.com, Image #137 of 154):  616 Fremont [Street], Lancaster (Ward 8), Lancaster Co., PA, Roll 1424 (Book 1), p. 268B, SN 11, SD 8, ED 70, enumerated 7 Jun 1900, official enumeration date 1 Jun 1900 (extracted by Diana Gale Matthiesen):

1900:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

19

20

22

23

24

25

27

*

616

219

226

Kolb George

Head

W

M

Jan 1851

49

M

24

PA

Ger

Ger

Carpenter

0

Y

Y

Y

R

H

____ Tressia M

Wife

W

F

Nov 1849

50

M

29

6

3

Eng

Ire

Ire

1873

27

N

N

Y

____ George W

Son

W

M

Oct 1877

22

S

PA

PA

Eng

Flourist

0

Y

Y

Y

____ Bessia E

Dau

W

F

Jan 1882

18

S

PA

PA

Eng

Cigar Maker

0

Y

Y

Y

Smith Charles M

S-in-Law

W

M

Sep 1877

22

M

2

PA

Swit

Swit

Sales Clerk

0

Y

Y

Y

[next page]

**

_____ Ella? C

Dau

W

F

Jun 1879

20

M

2

1

0

PA

PA

Eng

Y

Y

Y

*Friemond; **Fremont

They are living at the address that was occupied by George's parents in the 1880 census.

5.  1910 Census Index/Images (online at Genealogy.com, Image #43 of 206 — mis-indexed as being age 36):  536 High Street, Lancaster City (Ward 8), Lancaster Co., PA, Roll 1354 (Book 2), p. 120A, SN 6A, SD 4, ED 87, enumerated 19 Apr 1910, official enumeration date 15 Apr 1910 (extracted by Diana Gale Matthiesen):

1910:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	17	18	19	20	21	22	23	24	26	28
*	536	116	118	Kolb George	Head	M	W	56	M1	36			PA	(Ger) German	(Ger) German	Eng	Carpenter	Rail Road	W	N	0	Y	Y	R	H
				____ Thersie?	Wife	F	W	57	M1	36	6	3	(Eng) English	(Eng) English	(Eng) English	Eng	None					Y	Y
	*High Street

.  Email from Marsha Weaver, who personally read this tombstone:

...in St Joseph Catholic cemetery (I was there today)... The stone reads (Theresa J. wife of George M Kolb Born Nov 14, 1850 died Mar 13, 1922) I do not know where George M is buried.

.  Participant in the CULP Y-chromosome DNA Surname Project at FamilyTreeDNA.