— born in Chapman Twp., Snyder Co., PA:
3.  William H. MARKS, b. ca. 30 Jul 1858; d. 14 Oct 1883; bur. Grubb's Cem.; insane

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

Daniel MARKS Birth: About 1825, Of Berks, Pennsylvania Marriage: About 1848, Of Berks, Pennsylvania Spouse: Maria TROUP Birth: About 1827, Of Berks, Pennsylvania Father: David TROUP; Mother: Anna Source: patron submission

Most of this entry is incorrect, except possibly a Berks County origin for Daniel MARKS.  Maria's parents are John & Catharine TROUP.  The only David TROUP in any census between 1790 and 1840 was in Franklin Co., PA.  There is a widower, David TROUT/TRAUT in the 1850 census of Chapman Twp., Union [now Snyder] Co., PA, but he's Maria's brother, not her father.

2.  1850 Census Every-Name-Index/Images (online at Ancestry.com, Image #17 of 37):  Chapman Twp., Union [now Snyder] Co., PA, Roll M432_831, p. 153A, 119/119, enumerated 9 Dec 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):¤

Daniel Marks	20	M		Labourer		Penna
Polly Marks	40	F				"
Mary Marks	9/12	F				"

3.  1860 Census Every-Name-Index/Images (online at Ancestry.com, Image #28 of 45):  McKees Half Falls P.O., Chapman Twp., Snyder Co., PA, Roll M653_1182, p. 394, PN 102, 721/755, enumerated 28 Jun 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):¤

Daniel Marks	30	M		Farmer	150	100	Pennsylvania
Mary     "	41	F					"
Maryann  "	10	F					"
David    "	7	M					"
William  "	1	M					"
Catharine Traup	66	F					"

Catharine is Mary's mother.

4.  1870 Census Every-Name-Index/Images (online at Ancestry.com, Image #23 of 26):  McKees Half Falls P.O., Chapman Twp., Snyder Co., PA, Roll M593_1451, p. 47A, PN 23, 159/168, enumerated 11 Aug 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):¤

Marks Daniel H	40	M	W	Farmer	3400	100	Pa
_____ Mary	51	F	W	Keeping house			"
_____ Mary A	20	F	W				"
_____ David	17	M	W	at home			"
_____ William H	12	M	W				"	Insane
Lauver Alfred	6	M	W				"

5.  1880 Census Every-Name-Index/Images (online at Ancestry.com, Image #6 of 37):  Washington Twp., Snyder Co., PA, Roll T9_1194, p. 87B, PN 6, SD 7, ED 150, enumerated 4 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

11

13

18

20

22

23

24

25

26

40

44

Marks David

W

M

27

/

Farmer

PA

PA

PA

_____ Emma J

W

F

24

Wife

/

Keeping house

/

/

PA

PA

PA

_____ John D

W

M

1

Son

/

PA

PA

PA

_____ Mary

W

F

61

Mother

/

Keeping house

PA

PA

PA

_____ William H

W

M

21

Son

/

/

/

/

PA

PA

PA

6.  1890 Census:  the 1890 Census Population Schedules were destroyed.

7.  George W. Wagenseller.  1904.  Tombstone Inscriptions of Snyder County, Penna.  Wagenseller Publ., Middleburgh, PA (facsimile hard copies available from HigginsonBooks.com; online at the Snyder County PAGenWeb site):

p. 83	CHAPMAN TOWNSHIP... GRUBB'S CHURCH CEMETERY...
p. 93	Marks, Mary, w of Daniel, d June 3, 1819; d Dec 29, 1893, aged 74 y 6 m 26 d... Marks, William, d Oct 14, 1883, aged 25 y 2 m 14 d.

8.  Birthdate calculated using Ben Buckner's Birthdate Calculator.

Name	Deathdate	Age at Death	Result
Mary MARKS	29 Dec 1893	26d 6m 74y	03 Jun 1819
William MARKS	14 Oct 1883	14d 2m 25y	30 Jul 1858
(Calculated birthdates should always be prefaced with "ca." — you can't be certain the person who calculated their age did it correctly.)