Secondary sources show our subject to have died in Sunbury, but the 1920 census suggests he would likely have died in Milton.

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

Lewis Allen Sr. TROUPE Birth: About 1866, of Franklin Tnsp., Snyder, Pennsylvania Marriage: About 1891, of Franklin Tnsp., Snyder, Pennsylvania Spouse: Sallie Sevilla BENDER Birth: About 1870, of Franklin Tnsp., Snyder, Pennsylvania Source: patron submission

Birth Location: Franklin Tnsp., Snyder, Pennsylvania Lewis Allen TROUPE; Birth: 01 May 1892; Death: 12 Jun 1985 Stanley Quay TROUPE; Birth: 14 Aug 1894, Franklin, Pennsylvania; Death: 07 Oct 1945 Father: Lewis Allen Sr. TROUPE; Mother: Sallie Sevilla BENDER

2.  1880 Census Every-Name-Index/Images (online at Ancestry.com):  Lewis is living in Delaware Twp., Snyder Co., PA, with his parents (q.v.).  There were two Sarah/Sallie BENDERs living in Snyder County:  Sallie A. BENDER (æ 18, b. PA) in Union Twp. (p. 65D), with her widowed mother, Lucinda BENDER (æ 48, b. PA); and Sarah BENDER (æ 17, b. PA) living in Shamokin Dam, Monroe Twp. (p. 5A), as a servant in the HOTTENSTEIN household.  If the middle initial of the former is correct, then the latter is more likely our subject's future wife.

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

4.  1900 Census Every-Name-Index/Images (online at Ancestry.com, Image #18 of 26 — indexed "Fronpe"):  Franklin Twp., Snyder Co., PA, Roll T623_1481 (Book 2), p. 128B, SN 9, SD 10, ED 174, enumerated 11 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

11

12

13

14

15

19

21

22

23

24

25

27

198

200

Troupe Lewis

Head

W

M

Apr 1853

49

Wd

PA

PA

PA

Optician

Y

Y

Y

R

H

______ Effie

Dau

W

F

Dec 1882

17

S

0

0

PA

PA

PA

7

Y

Y

Y

______ Simon

Son

W

M

Feb 1888

12

S

PA

PA

PA

7

Y

Y

Y

______ Allen

Son

W

M

May 1892

8

S

PA

PA

PA

______ Quay

Son

W

M

Aug 1894

5

S

PA

PA

PA

______ Stella

Dau

W

F

Jan 1898

2

S

PA

PA

PA

5.  1910 Census Every-Name-Index/Images (online at Ancestry.com, Image #18 of 42):  51 Catawissa, Sunbury Boro. (Ward 8), Northumberland Co., PA, Roll T624_1384 (Book 2), p. 220A, SN 10A, SD 12, ED 118, 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	19	20	23	24	26	27	28
*	51	199	215	Bartholomew Charlotta	Head	F	W	80	Wd		4	4	PA	PA	PA	Eng	Retired	Own Income		Y	Y	O	F	H
				Troupe Agness	Companion	F	W	33	M1	1			VA	VA	VA	Eng	None			Y	Y
				______ Louis A	boarding	M	W	51	M2	1			PA	PA	PA	Eng	oceoluses	Traveling	OA	Y	Y
*Catawissa

Can't find any of the children (except for Effie, who is married and living with her husband), and I really looked.

6a.  1920 Census Every-Name-Index/Images (online at Ancestry.com, Image #18 of 42):  16 Mahoning Street, Milton Borough (Ward 4), Northumberland Co., PA, Roll T625_1612, p. 86A, SN 9A, SD 11, ED 94, 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

9

10

11

12

16

17

18

19

21

23

25

26

27

28

*

16

201

216

Mosser James

Head

R

M

W

41

M

Y

Y

PA

PA

PA

Y

Laborer

Iron Mill

W

______ Effie

Wife

F

W

37

M

Y

Y

PA

PA

PA

Y

None

Taylor Fred

Sune Law

M

W

24

M

Y

Y

PA

PA

PA

Y

Laborer

Novelty Shop

W

______ Alma

Dau

F

W

17

M

Y

Y

PA

PA

PA

Y

None

Troupe Lewis A

Father Law

M

W

67

M

Y

Y

PA

PA

PA

Y

None

Fell Earnes

Boarder

M

W

18

S

N

Y

Y

PA

PA

PA

Y

Laborer

Iron Mill

W

Johnson Frank

Boarder

M

W

50

S

Y

Y

PA

PA

PA

Y

Laborer

Iron Mill

W

*Mahoning Street

6b.  1920 Census Every-Name-Index/Images (online at Ancestry.com, Image #12 of 47):  614 Pennsylvania Ave., Sunbury Borough (Ward 8), Northumberland Co., PA, Roll T625_1611 (Book 2), p. 225B, SN 6B, SD 11, ED 137, enumerated 5 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	9	10	11	12	17	18	19	21	23	25	26	27	28
*	614	145	159	Troup Agnes	Lodger	R	F	W	42	M	Y	Y	VA	VA	VA	Y	Cook	Logans Resturant	W
*Pennsylvania Ave

Agnes is alone in the household, so it's not clear with whom she is "lodging," unless it simply means she's a renter.

7.  1930 Census Every-Name-Index/Images (online at Ancestry.com, Image #30 of 31):  618 Reagan Street, Sunbury City (Ward 6), Northumberland Co., PA, Roll 2091 (Book 2), p. 101B, SN 15B, ED 49-72, SD 9, enumerated 29 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).
1	2	3	4	5	6	7	8	10	11	12	13	14	16	17	18	19	20	24	25	26	27	28	30
*	618	355	369	Troup Agnes M	Head	R	15	N	F	W	48	Wd	N	Y	VA	VA	VA	Y	Operator	Shirt-Factory	W	Y	N
*Reagan Street

8.  Craig Trout, administrator.  TROUT-DNA Research Project: Line #47 — John Peter TRAUB (online at FamilyTreeDNA.com).

9.  Email from Susan TROUPE.

10.  Descendants of Sarah HERROLD & Peter TROUP (online at The Herrold Family Reunion Website).

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