1.  Marriage Record (in the Notes of a file submitted to WorldConnect):

Williamsport Gazette & Bulletin / Friday, October 16, 1891 A Wedding and Reception Serenus Stroup and Miss Maggie O'Brien were married at the home of the bride's parents, on Wilson street, at 8:30 o'clock Wednesday evening [14 Oct 1891], the ceremony having been performed by Rev Samuel Creighton, of Pine street ME church.  Only the relatives and near friends of the couple were present.  Last evening a reception was tendered at the home of the groom, No. 427 Wilson street, by the newly married couple, to their many friends.

2.  1900 Census Images (online at Ancestry.com; Image #3 of 37):  707 Mulberry, Williamsport (Ward 8), Lycoming Co., PA, Roll, p. 155A, SN 2, SD 11, ED 90, enumerated 1 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	27
36	37	Stroup Cyrenius ?	Head	W	M	Apr 1871	29	M	9			PA	PA	PA	Salesman (Dry Goods)	0		Y	Y	Y	R	H
		______ Margaret	Wife	W	F	Nov 1873	26	M	9	1	1	PA	Canada (Eng)	PA				Y	Y	Y
		______ Myrtel	Dau	W	F	Oct 1893	6	S				PA	PA	PA	At School		9

Cyrenius's initial looks like a backward E or 3, if it even is an initial — the ink is much paler than the rest of the name.

3.  1910 Census Index/Images (online at Ancestry.com, Image #8 of 15):  707 Mulberry St., Williamsport City (Ward 8), Lycoming Co., PA, Roll T624_1371 (Part 1), p. 187B, SN 4B, SD 11, ED 92, enumerated 21 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	23	24	25	26	28
*	707	103	105	Stroup Serenus	Head	F	W	59	Wd		1	1	PA	PA	PA	Eng	Own income	Y	Y		R	H
				______ Margaret	Dau	F	W	36	S	-	-	-	PA	PA	PA	Eng	None	Y	Y
				______ Myrtle	Dau	F	W	16	S				PA	PA	PA	Eng	None	Y	Y	Y
*Mulberry St

Good grief.

4.  1920 Census Index/Images (online at Ancestry.com, Image #9 of 44):  921 Cherry St., [Williamsport,] Loyalsock Twp., Lycoming Co., PA, Roll T625_1598 (Book 2), p. 248A, SN 5A, SD 16, ED 53, enumerated 9-12 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

22

23

25

26

27

28

*

921

97

100

O'Brien Lydia A

Head

R

F

W

77

Wd

Y

Y

PA

PA

PA

Y

None

_______ Myrtle J

Dau

F

W

41

S

Y

Y

PA

Can

Eng

PA

Y

Chief Operator

Telephone Co

W

Stroup Margaret

Dau

F

W

46

M

Y

Y

PA

Can

Eng

PA

Y

Dressmaker

At Home

OA

______ Myrtle

GDau

F

W

26

S

Y

Y

PA

PA

PA

Y

Teacher

Music

OA

Beeber Charlotte

Nurse

F

W

75

Wd

Y

Y

PA

PA

PA

Y

Practical Nurse

Private Family

W

*Cherry St

Cyrenius is supposedly alive (d. 1955), but I can find him.  Margaret's marrital status is "M," not "Wd," so apparently he is alive.  So where is he?

5.  1930 Census Index/Images (online at Ancestry.com, Image #23 of 27):  933 Hepburn St., Williamsport City (Ward 12), Loyalsock Twp., Lycoming Co., PA, Roll 2076, p. 49A, SN 12A, ED 41-77, SD 4, enumerated 24 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	9	10	11	12	13	14	15	16	17	18	19	20	24	25	26	27	28	29	30
*	933	7	7	Stroup Margaret E	Head	R	37	R	N	F	W	56	M	18	N	Y	PA	Can Eng	PA	Y	None
				______ Myrtle	Dau					F	W	36	S		N	Y	PA	PA	PA	Y	Music Teacher	Teacher of Music	O	Y
				O'Brein Clyde W	Bro					M	W	47	Wd	31	N	Y	PA	Can Eng	PA	Y	Architect	Builder Bldg	W	N	16	N
*Hepburn St.

Cyrenius is supposedly alive (d. 1955), but I can't find him.  Margaret's marrital status is "M," not "Wd," so apparently he is alive.  Again, where is he?

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