These may be the two eldest sons of our subject:
.  Theobald / Dewald STRAUB, b. ca. 1770s, of Berks Co., PA 
.  Christian STRAUB, b. 1784-90 

1.  Marriage Record:

2.  F. Edward Wright.  1993.  Berks County Church Records of the 18th Century.  Vol. 2.  Family Line Publ., Westminster, MD (Broderbund CD-166).

INTRODUCTION... XX.  MOSELEM (Ontelaunee, Zion's, Peter's, St. Peters) Richmond Township A Lutheran register was begun in 1741.  The Reformed register begins in 1764 referring to the congregation as "Peter's Church in Richmond Township." Lutheran pastors:  Tobias Wagner (1743-1759), Bernard Michael Hausihl (1759-1763), Helfrich Schaum (1763-1778) and Daniel Lehman (1778-1810). Reformed pastors:  Glatfelter states they cannot be identified with certainty. Location:  Zion, 4 miles west of Kutztown; Reformed is St. Peter's United Church of Christ, 3 miles northwest of Fleetwood. Records: Pennsylvania State Library. Baptismal Records of Zions (Moselem) Lutheran Church, Richmond Twp., Berks Co., Pa., 1743-1809... MOSELEM CHURCH Baptismal Records...

Johannes Straub son of Johannes Straub and wife Maria, born October 7, 1795, baptized January 1, 1796. Sponsors: Samuel Ely and wife Catharina.

3.  Census Index:  Colonial America, 1607-1789 (Broderbund CD-310):  not found, but there are no Berks Co., PA, records on the CD.

4.  1790 Census Index and Digital Images (online at Ancestry.com; Image #4 of 4; extracted by Diana Gale Matthiesen):¤•

1790

PA

Berks Co.

Richmond Twp.

p. 79

Ln. 18

Jno Straup

1-2-3-0-0

These data indicate:

Gender and Type	Age Class	Therefore Born	Individuals Inferred
1 free white males	16 or over	in or bef. 1774	= Johannes
2 free white males	15 or under	1774-1790	= Christian? (b. 1784-90) = Dewaldt? (b. 1770s)
3 free white females	all ages	in or bef. 1790	= Maria = Daughter A = Daughter B

Listed next to Widow MERKEL, who is listed two lines from Casper MERKEL.  Also on page: Conrad, Henry, and Simon SIDLER.  Also in township:  Anna Maria (STRAUB) MARKLE — might Johannes be her brother?  They are the right ages to be siblings.

5a.  Census Index:  U.S. Selected Counties, 1800 (Broderbund CD-312).  Please see my WARNING regarding use of this database (the numerical data have the genders switched). 

1800

Straup, John

PA

Berks Co.

p. 636

00110-1010100

5b.  1800 Census Index and Digital Images (online at Ancestry.com; Image #3 of 4 — indexed "Strauss" at Genealogy.com; extracted by Diana Gale Matthiesen):

1800

PA

Berks Co.

Maxatawny Twp.

p. 636

Ln. 24

John Straup

10101-00110-00

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	9 or under	1790-1800	= Johannes Jr (b. 1795)
1 male	16-25	1774-1784	= Christian? (b. 1784-90)
1 male	45 or over	in or bef. 1755	= Johannes
1 female	16-25	1774-1784	= Daughter B?
1 female	26-44	1755-1774	= Maria

Dewaldt is married and enumerated in Northampton [now Carbon] County.  List was roughly alphabetized, so no neighborhood reconstruction is possible.

6.  1810 Census Index and Digital Images (online at Ancestry.com; Image #10 of 181 — indexed "Straup"; extracted by Diana Gale Matthiesen):

1810

PA

Berks Co.

Maxatawny Twp.

p. 67/589

Ln. 27

John Stroup

10101-00101-00

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	9 or under	1800-1810	= Son
1 male	16-25	1784-1794	= Son
1 male	45 or over	in or bef. 1765	= John
1 female	16-25	1784-1794	= Daughter B?
1 female	45 or over	in or bef. 1765	= Maria