1.  Marriage Record:

2.  1860 Census Images (online at Ancestry.com; Image #17 of 22):  East Penn Twp., Carbon Co., PA, p. 843, PN 17, 120/132, enumerated 14 Jun 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):¤•

George Herter	53	M					Pa
Catharine	50	F					"
David Stroup	23	M					"
Drusilla	22	F					"
Anna	3	F					"
Alfred Back	11	M					"

George & Catharine HERTER are Druscilla's parents.

3.  1870 Census Images (online at Ancestry.com; Image #18 of 22):  Lehighton P.O., East Penn Twp., Carbon Co., PA, p. 60A, PN 18, enumerated 25 Jul 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):¤•

128	131	Stroub D H	37	M	W	Farmer	8000	1500	Pa
		______ Anna	13	F	W	At Home			Pa
		Troxel Wm	18	M	W	Works on Farm			Pa
		Tobach Sarah	33	F	W	Domestic Servant			"
		Rauch Mary	7	F	W				"
	132	Herter George	63	M	W	At Home	850	4000?	"
		______ Catharine	6	F	W				"

Listed two households from David STROUB (æ 36).  It's hard to figure the relationship between the two David's because they're only one year apart in age. 

4.  1880 United States Census and National Index (LDS Family History Resource File: CD-ROM Library):¤•

Census Place: East Penn, Carbon, Pennsylvania
Source: FHL Film 1255108; NARA Film T9-1108; Pg 462D
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
David H. STRAUP	Self	M	M	W	46	PA	Farmer	PA	PA
Amelia STRAUP	Wife	F	M	W	35	PA	Keeping House	PA	PA
Harvey L. STRAUP	Son	M	S	W	5	PA		PA	PA
Ervilla D. STRAUP	Dau	F	S	W	2	PA		PA	PA
Tavilla STEIGERWALT	Other	F	S	W	16	PA	Domestic Servant	PA	PA

I checked the page image (online at Ancestry.com), and the "Relationship" field for Tavilla is blank.

5.  1890 Census:  the 1890 Census Population Schedules were destroyed.

6.  1900 Census Every-Name-Index/Images (online at Ancestry.com, Image #47 of 57 — indexed "Straut"):  137 Second Street, Lehighton Borough (Ward 2), Carbon Co., PA, Roll T623_1390 (Book 2), p. 37A, SN 24, SD 3, ED 15, enumerated 19 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

19

20

21

22

23

24

25

26

27

*

137

502

529

Straub David

Head

W

M

Jul 1832

67

M

28

PA

PA

PA

Landlord

0

Y

Y

Y

O

F

H

______ Amelia

Wife

W

F

Nov 1844

55

M

28

4

4

PA

PA

PA

Keeping House

Y

Y

Y

______ Harvey L

Son

W

M

Jun 1875

24

S

PA

PA

PA

At School

8

Y

Y

Y

______ Arvilla D

Dau

W

F

Dec 1878

21

S

PA

PA

PA

Y

Y

Y

*Second Street

7.  1910 Census Every-Name-Index/Images (online at Ancestry.com, Image #8 of 26 — indexed "Stranb"):  132 South Second Street, Lehighton Borough (Ward 2), Carbon Co., PA, Roll T624_1327, p. B, SN 4B, SD 7, ED 15, enumerated 20 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	20	21	22	23	24	26	27	28
*	132	90	96	Straub Harvey L	Head	M	W	34	M1	7			PA	PA	PA	Eng	Minister	W	N	0	Y	Y	O	F	H
				______ Blanche	Wife	F	W	33	M1	7	1	1	PA	PA	PA	Eng	None				Y	Y
				______ Ruth M	Dau	F	W	4	S				PA	PA	PA		None
				______ Amelia	Mother	F	W	64	Wd		4	4	PA	PA	PA	Eng	None				Y	Y
*South Second Street

8.  1920 Census Every-Name-Index/Images (online at Ancestry.com):  Amelia not found, at least not indexed as Amelia STR* in Carbon Co., PA.

9.  Cemeteries of Carbon County, Pennsylvania:  Ben Salem Cemetery (online at Jack Sterling's Carbon County web site):

Stroup, Drusilla Herter

1832/10/16

1867/06/04

"Daughter of George and Catherine Herter" "Married to Benjamin Straup 11 years"  Stone shows her as a Herter

Either the 1860 census is wrong about her age or the stone is wrong (or mis-read).

10.  John W. Jordan, Edgar Moore Green, & George T. Ettinger, eds.  1905.  Historic Homes and Institutions and Genealogical and Personal Memoirs of the Lehigh Valley, Pennsylvania.  Lewis Publ. Co., New York (excerpts online at Karen Smith Furst's web site):

DAVID H. STRAUB, who is now living retired in Lehighton, but who for many years was industriously and successfully identified with agricultural pursuits in Carbon county, belongs to one of the early families of the Lehigh Valley, of Than origin. His grandfather, Theodore [Theobald] Straub, was born in what is known as Dry Land, a little hamlet located between Easton and Bethlehem.  He was an extensive distiller, and a man of considerable force of character and local influence in his day, being widely known as an industrious, upright and worthy citizen.  His family numbered five sons:  Emanuel, Daniel, John, David and Thomas, and three daughters. David Straub, the father of D.H. Straub, was born at Dry Land, and in his youth became familiar with the duties and labors that fall to the lot of the agriculturist.  After attaining man's estate he continued to follow the pursuit to which he had been reared, and owned and cultivated one hundred and thirty-six acres of valuable land.  During his active life he amassed considerable property both in real estate and personality.  In all of his business relations with his fellow men he was honorable and trustworthy, and commanded the respect and good will of all with whom he became associated, either in business or social relations.  He married Polly Oldwine, and they became the parents of eleven children:  Charles, Thomas, Daniel, Levi, John, David H., Mary, Harriet, Josiah, Emeline and Amelia, but David H. and the daughters are the only members of that once numerous household now living. David H. Straub was born in Towamensing township, Carbon county, Pennsylvania, July 20, 1833.  He was reared and educated there, and in his youth learned the bricklayer's trade, which he followed for five years, from 1851 until 1856.  He then turned his attention to farming and for thirty years resided upon a farm, continuing to make it his home until 1886, when he removed to Lehighton.  Here he owns good city property in addition to his rich and productive tract of land of two hundred acres in East Penn township, Carbon county.  He is a worthy citizen of the borough of Lehighton, and that he has the confidence and trust of his fellow townsmen is indicated by the fact that he was chosen by popular vote for the office of borough treasurer.  He has also been treasurer for the fire and water companies of Lehighton, and while residing in East Penn township he filled several local offices.  His religious faith is indicated by his membership in the Lutheran church, in which he has also occupied several official positions. Mr. Straub has been twice married.  In 1856 he wedded Miss Drucilla Harter, and they became the parents of a daughter, Annie, who is now the wife of Mr. Hoppis.  In 1872 Mr. Straub wedded Mrs. Amelia Hawk, who by her first marriage had two sons, Emery and David.  The former resides at East Penn, and the latter is a minister of the Lutheran church in Lancaster county, Pennsylvania.  By the second marriage of Mr. Straub there are two children:  Rev Harvey L. Straub, a minister of the Lutheran church, at Berneville, now stationed in Berks county, Pennsylvania; and Arville D., the wife of Rev. Wilmer Heldt, pastor of Lutheran church at Centerville, Northampton county, Pennsylvania.