1.  LDS.  Family Search: Internet Genealogy Service:  IGI - International Genealogical Index (online at FamilySearch.org).

Charles L. STRAUB Birth: Allegheny, Pannsylvania Marriage: 11 Aug 1897, Pittsburgh, Allegheny, Pennsylvania Spouse: Mazenia B. CAVRN Birth: Connellsville, Pennsylvania Source: Ministers' Returns of Marriages Performed in the City of Pittsburgh, Pennsylvania, 1875-1909. Pittsburgh (Pennsylvania). Bureau of Health

2.  1870 Census Every-Name-Index/Images (online at Ancestry.com):  James CAVEN (æ 35, b. PA) and wife Minna (æ 23, b. PA), plus four children, are living in Connellsville, Fayette Co., PA (p. 54B).

3.  1880 Census Every-Name-Index/Images (online at Ancestry.com):  Mazinia CAVAN (æ 8, b. PA) is living in Pittsburgh, Allegheny Co., PA (p. 263A), with her parents, James B. CAVAN (æ 46, b. PA) and Minerva (æ 39, b. PA), plus five siblings.

4.  1890 Census:  the 1890 Census Population Schedules were destroyed.

5.  1900 Census Every-Name-Index/Images (online at Ancestry.com, Image #14 of 28):  5543 Colombo St., Pittsburg (Ward 19), Allegheny Co., PA, Roll T623_1361 (Book 2), p. 58B, SN 7, SD 18, ED 223, enumerated __ 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
*	5543	111	116	Straub Charles L	Head	W	M	Jul 1870	29	M	3			PA	Ger	Ger			Bookeeper (Grain & Feed)	0	Y	Y	Y	R	H
				______ Mazie B	Wife	W	F	May 1872	28	M	3	0	0	PA	PA	PA					Y	Y	Y
				Wrabl Mary	Servant	W	F	May 1883	27	S				Hungaria	Hungaria	Hungaria	1898	2	Servant	0	Y	Y	Y
*Colombo St

Charles's mother was born in Germany, but his father was born in PA.

6.  1910 Census Index/Images (online at Ancestry.com, Image #11 of 29):  815 Braddock Ave., Pittsburg City (Ward 14), Allegheny Co., PA, Roll T624_1304 (Part 1), p. 77A, SN 6A, SD 23, ED 464, enumerated 15 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
*	815	106	112	Straub Charles L	Head	M	W	39	M1	12			PA	PA	PA	Eng	Book Keeper	Wholesale House	W	N	0	Y	Y	R	H
				______ Mazie B	Wife	F	W	37	M1	12	1	1	PA	PA	PA	Eng	None					Y	Y
				______ Dorothra E	Dau	F	W	9	S				PA	PA	PA		None
*Braddock Ave

7.  1920 Census Every-Name-Index/Images (online at Ancestry.com, Image #14 of 31 — indexed "Stout"):  1026 Mellon [St/Ave], City of Pittsburgh (Ward 11), Allegheny Co., PA, Roll T625_1518 (Book 2), p. 143B, SN 7B, SD 14, ED 490, enumerated 9 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).

1

2

3

4

5

6

7

8

9

10

11

12

17

18

19

21

23

25

26

27

28

*

1026

116

144

Straub Charles L

Head

O

M

M

W

49

M

Y

Y

PA

PA

PA

Y

Bookkeeper

jobbing

W

______ Mezinia

Wife

F

W

47

M

Y

Y

PA

PA

PA

Y

none

______ Dorothy

Dau

F

W

19

S

Y

Y

PA

PA

PA

Y

none

*Mellon

8.  1930 Census Index/Images (online at Ancestry.com):  not found, though my search was not exhaustive.