1.  Marriage Record:

2.  1820 Census Index/Images (online at Ancestry.com; Image #1 of 7; extracted by Diana Gale Matthiesen):

1820

PA

Union Co.

Washington Twp.

p. 108

Ln. 15

Bay Abraham

200010-20010-0-100

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	9 or under	1810-1820	= David? (b. 1819/20) = Son A
1 male	26-44	1775-1794	= Abraham
2 females	9 or under	1810-1820	= Daughter B = Daughter A
1 female	26-44	1775-1794	= Wife-1
1	person engaged in agriculture

3.  1830 Census Index/Images (online at Ancestry.com; Image #3 of 24; extracted by Diana Gale Matthiesen):

1830

PA

Union Co.

Penns Twp.

p. 395

Ln. 14

Boy Abm

211 000 100 - 002 001 000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	4 or under	1825-1830	= Franklin (b. 1828/9) = Henry?
1 male	5-9	1820-1825	= Son B
1 male	10-14	1815-1820	= David? (b. 1819/20)
1 male	40-49	1780-1790	= Abraham
2 females	10-14	1815-1820	= Daughter B = Daughter A
1 female	30-39	1790-1800	= Elizabeth? (b. 1795)

Where are Elizabeth's children?  Did they go to live with their guardians?  It's hard for me to believe a woman would give up her own children to raise some other woman's children.  Is Elizabeth really the wife in the household?

4.  Census Index:  U.S. Selected Counties, 1840 (Broderbund CD-316):  the only BAY indexed as being in Union Co., PA, is Samuel, and both he and his wife are in their 20s.

5a.  Census Microfilm Records:  Pennsylvania, 1850 (Broderbund CD-305):  Buffalo Twp., Union [now Snyder] Co., PA, pp. 270AB, 1460/1535, enumerated 3 Oct 1850 (enumerated by Diana Gale Matthiesen):

John Straub	29	M	Farmer		Pa
Nancy	25	F			"
Amanda	2	F			"
Elisabeth Bay	56	F			"
[next page]
Daniel Strob	28	M	Miller		Pa

5b.  1850 Census Index/Images (online at Ancestry.com; Image #7 of 24):  East Buffalo Twp., Union Co., PA, Roll M432_831, p. 288A, 1593/1778, enumerated 15 Oct 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Stephen Chappel	33	M		Farmer	3500	New York
Mary [YOUNG]	33	F				Pa
James	5	M				"
Charles	4	M				"
Margaret Young	50	F				"
Franklin Bay	21	M		Do		"

5c.  1850 Census Index/Images (online at Ancestry.com; Image #16 of 24):  East Buffalo Twp., Union Co., PA, p. 292B, 1761/1847, enumerated 17 Oct 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Charles Yeoder	30	M		Carpenter		Pa
Mary Ann	28	F				"
Martha Ann	8	F				"
William E	3	M				"
William Fisher	21	M		Do		"
Emanuel Bay	18	M		Do		"

6.  1860 Census Images (online at Ancestry.com, Image #50 of 65; online at Genealogy.com, Image #10 of 25):  Lewisburg P.O., East Buffalo Twp., Union Co., PA, Roll 1188 (Book 1), p. 730, PN 132, 832/896, enumerated 18 Jul 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):¤•

John Straub	39	M		Farmer	1100	400	Penna
[John's wife and children]
Daniel Straub	37	M		Day Laborer			"
Elizabeth Straub	65	F					"

7.  Obituary on file at the Union County Historical Society in Lewisburg (courtesy of Terry Straub) that reads:

Elizabeth, wife of Abraham Bay, and former wife of John Straub, born December 12, 1795, died May 17, 1864 at Driesbach United Church of Christ Church, May 17, 1864 in East Buffalo.  Union Co. Star & Lewisburg Chronicle, May 20, 1864.

8.  Emails from Terry Straub, including:

In the August 1864 estate settlement I have for Elizabeth it mentions that $375.80 will be distributed among 6 heirs.  Sadly, those heirs are not listed.  However, in the Final Decree in Probate Court for Daniel Straub filed on November 3, 1909, Elias Straub, Henry Bay, Franklin Bay and Emanuel Bay are listed as "brothers of the deceased"... I did hear from... a descendant of Emanuel Bay.  He gives Emanuel's birth year as 1831; Emanuel married Emma Clark October 11, 1859; He died June 12, 1894...

9.  Messages posted to the Bay Family Genealogy Forum (online at GenForum.com), including this one:

The following tombstone is at Dreisbach UCC Cemtery - R R Lewisburg, Union County: Elizabeth Bay w/o Abraham former w/o John Straub 12 Dec 1795 - 17 May 1864