1.  Marriage Record:

2.  1910 Census Index/Images (online at Genealogy.com, Image #58 of 206):  725 High Street, Lancaster City (Ward 8), Lancaster Co., PA, Roll 1354 (Book 2), p. 127B, SN 13B, SD 4, ED 87, enumerated 23 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).

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28

*

725

254

259

Kolb George

Head

M

W

31

M1

3

Penn

Penn

(Eng) Eng

Eng

Carpenter

Railroad Co

W

N

0

Y

Y

R

H

____ Mary

Wife

F

W

27

M2

3

3

3

(Ger) Ger

(Ger) Ger

(Ger) Ger

1888

Eng

None

Y

Y

____ George

Son

M

W

2

S

Penn

Penn

(Ger) Ger

None

____ Margureit

Dau

F

W

6/12

S

Penn

Penn

(Ger) Ger

None

Rutter Martin

StepSon

M

W

6

S

Penn

Penn

(Ger) Ger

None

Y

*High Street

3.  1920 Census Index/Images (online at Ancestry.com, Image #11-12 of 30 — indexed "George G. ??"):  721 Union Street, Lancaster City (Ward 8), Lancaster Co., PA, Roll T625_1584 (Book 1), pp. 158A-158B, SN 6A-6B, SD 4, ED 77, enumerated 6 Jan 1920, official enumeration date 1 Jan 1920 (extracted by Diana Gale Matthiesen):

1920:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

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25

26

27

28

*

721

104

106

Kolb George G

Head

R

M

W

42

M

Y

Y

PA

PA

Eng

Eng

Y

Carpenter

Railroad Co

W

____ Mary E

Wife

F

W

37

M

Un

Na

Y

Y

Ger

Ger

Ger

Ger

Ger

Ger

Y

None

[next page]

*

721

104

106

Kolb Martin W

Son

M

W

16

S

N

Y

Y

PA

PA

Ger

Ger

Y

Winder

Silk Mill

W

____ George C

Son

M

W

12

S

Y

Y

Y

PA

PA

Ger

Ger

Y

None

____ Charles E

Son

M

W

8

S

Y

PA

PA

Ger

Ger

None

____ Robert J

Son

M

W

2 9/12

S

PA

PA

Ger

Ger

None

____ Gregory G

Son

M

W

1/12

S

PA

PA

Ger

Ger

None

*Union Street

Martin is Mary's biological son, but he is George's step-son.  Listed five households from George M. KOLB (æ 27, b. PA, wife Margaret E.).

4.  1930 Census Index/Images (online at Ancestry.com, Image #26 of 47 — indexed "Kolf"):  721 Union Street, Lancaster City (Ward 8), Lancaster Co., PA, Roll 2057, p. 253B, SN 13B, ED 36-71, SD 26, enumerated 10 Apr 1930, official enumeration date 1 Apr 1930 (extracted by Diana Gale Matthiesen):

1930:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

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25

26

27

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30

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721

282

283

Kolb George G

Head

O

2000

R

N

M

W

52

M

23

N

Y

PA

PA

Eng

Y

Carpenter

Genl practice

W

Y

N

____ Mary E

Wife

F

W

48

M

18

N

Y

Ger

Ger

Ger

German

1885

Na

Y

None

____ George C

Son

M

W

22

S

N

Y

PA

PA

Ger

Y

Laborer

machine shop

W

N

____ Charles

Son

M

W

18

S

Y

Y

PA

PA

Ger

Y

Carpenter

Genl practice

W

Y

____ Robert E

Son

M

W

13

S

Y

Y

PA

PA

Ger

Y

None

____ Gregory G

Son

M

W

10

S

Y

Y

PA

PA

Ger

Y

None

*Union Street

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