Bruce, I am not related, you have a good start and hope this helps and hope you enjoy your genealogy. Paula
Interesting info about the granite being used in the Capitol building.
23 June 1860: Beat 2, Cherokee, Texas Post Office: Rusk
Roll: M653_1290 Page: 438
Thos B Lewis, age 35, farmer, $250 real estate, $250 personal, born AL
Susan C Lewis, age 24, TN
James H Lewis, age 4, TX
Charles W Lewis, age 2, TX
Mary H Lewis, age 1, TX
James E Lewis, age 25, farm laborer, AL
The 1860 Cherokee census had a couple of male Lewis' who would have been old enough to be father of Thomas B Lewis but none born in GA as indicated on the 1880 census as being the birthplace of his father which may not be correct. The 1900 record indicates T B Lewis father was from NC.
I did not find Thomas B nor James E Lewis in the 1850 record and James E Lewis was not counted in either Cherokee or Burnet counties in 1870. If Thomas and Susan lived long enough to have their deaths recorded [required beginning in 1903] their death certificates should have the names of the parents on them providing the informant knew who they were; well worth the 10 or 11 dollars for the copies.
14 Sept 1870:Precinct 5, Burnet, Texas Post Office: Perdenales
Roll: M593_1577 Page: 272
Thomas B Lewis, age 41, farmer, did not own real estate, $800 personal wealth, born AL 
Susan Lewis, age 35, TN 
James Lewis, age 14, TX 
Charles Lewis, age 12, TX 
Mary Lewis, age 10, TX 
Samuel Lewis, age 9, TX 
Thomas Lewis, age 4, TX 
Nancy Lewis, age 2, TX 
Robert Lewis, age 5 mos, born Feby 1870, indicated on census.
Calvin Phelin, age 28, born AR, farm laborer.
...first 4 children attended school within the year.
1880 census on the LDS website - http://www.familysearch.org
1880 - Precinct 5, Burnet, Texas
Family History Library Film 1255293
NA Film Number T9-1293 Page Number 167A
Thomas B. LEWIS age 51  AL Farmer GA TN
Susan C. LEWIS 45 TN Keeping House parents left blank 
Samuel K. LEWIS Son 19 TX 
Thomas LEWIS Son 14 TX 
Nancy L. LEWIS Dau 12 TX 
Robert LEWIS Son 10 TX 
Julia LEWIS Dau 8 TX 
Tennessee LEWIS Dau 5 TX 
Rosa Bell LEWIS Dau 3 TX 
Page 167A - 1880 Burnet
James H. LEWIS 24 TX AL TN
Mary LEWIS Wife 22 TX --- ---
Bettie LEWIS Dau 3 TX
Roxie I. LEWIS Dau 2 TX
[Lewis, James H. married Rusha, Mary H. 20 July 1876, Burnet Co]
Page 167A - 1880 Burnet
Charles LEWIS 23 TX AL TN
Sarah LEWIS Wife 18 TX AR TX
Charles LEWIS Son 5 Mos TX
[Lewis, Charles W. married Boltinghouse, Sarah E. 2 Jan 1879, Burnet Co]
Most of the 1890 census burned in 1921.
1900; Justice Precinct 5, Burnet, Texas; Roll: T623 1616; Page: 2A; Enumeration District: 51.
Dwelling # 24
Bill Turner, 3/1874, married 5 yr, born TX
Rose B Turner, wife, 5/1877, TX AL TN...most likely dtr of Thomas & Susan
Luther A Turner, son, 6/1897
Dwelling # 25
Thomas Lewis, born 2/1829, age 71, married 46 yrs, born AL, father NC, mother TN, owned farm free of mortgage; father's birthplace changed.
Susan, wife, 10/1834, age 65, TN VA NC, mother of 8 living children, 10 were born.
Charles K Lewis, grndson, age 20
Julia M Lewis, grnddtr, age 18
Charles K Lamascus, grndson, 1891...listed as stepson and is grndson.
Mary E Lamascus, grndtr, 1892
Lula B Lemascus, grndtr, 1894
[Charles K and Julia must be children of Charles W Lewis and Sarah Boltinghouse as they had son Charles in the 1880 record]
Samuel Lewis, wife and 10 children residing on other side of Thomas and Susan in 1900.
19 June 1900; Justice precinct 3, Blanco, Texas; Roll: T623 1612; Page: 8A; Enumeration District: 7.
Robert F Lewis, born 2/1870 in Texas, father from Alabama, mother from TN; married 10 yrs, farm was mortgaged, could read and write.
Frankie, wife, born 4/1871 in Alabama, father from KY, mother from VA, mother of 5 children all living, could read and write.
V Bruce, 11/1897
The Blanco county website on Rootsweb [above link] has marriage records online but no record for Robert and "Frankie" in Blanco county.
14 Apr 1930; Census Place: Precinct 3, Williamson, Texas; Roll: 2411; Page: 11B; Enumeration District: 12; Image: 601.0.
J Bruce Lewis, age 32, born in Texas, parents Texas, married at age 25.
Beatrice, wife, age 24, born in Texas, parents Texas, married at age 17.
Winston, son, age 6
Doris, dtr, age 4yr 5 mos
Clinton, son, age 2 yr and ? mos
1920; Precinct 5, Burnet, Texas; Roll: T625_1782; Page: 2B; Enumeration District: 26; Image: 1079.
Jessie J Gregg, age 39, born TX, parents TX
Emma Gregg, age 35, born TX, parents TX
Gertrude, dtr, age 15, born N Mex
Beatrix, dtr, age 14, TX
Myrtle, dtr, age 12, TX
Ward, son, age 10, TX
Virnon, son, age 4, TX
Vera, dtr, age 1, TX
1910: 8 J-Pct, Travis, Texas
Series: T624 Roll: 1594 Page:293A
Jessie Gregg, age 29, married 8 yrs, born TX, parents TX, farm property was mortgaged, could read/write.
Emma, wife, age 25, born TX, parents TX, 5 children born and all living, could read/write.
Grace, 7, born N Mex...married by 1910 or died.
Gertrude, 6, N Mex
Beatrice, 4, TX
Myrtle, 3, TX
Ward, 1, TX
John Gregg, father, 54, widower, born TX, father MO, mother USA.
21 June 1900; Census Place: Justice Precinct 8, Travis, Texas; Roll: T623 1673; Page: 7B; Enumeration District: 120.
John G Gregg, 12/1853, 46, widower, born TX, parents MO
Eunice B, dtr, 4/1884, TX, mother TX
Fredrick W, son, 3/1887, TX
Jerry Gregg, father, 3/1813, age 87, married 37 yrs, born MO, parents ?
Mary W ? Gregg, listed as mother, 2/1836, age 64, born AR, parents ?, mother of 6 living children, 7 were born. Appears to be 2nd marriage for Jerry Gregg and possibly Mary.
1900; Pct 6, Travis
Abner Gregg, 5/1880, born TX, father MO, mother AR, listed as bro in law of John R or B Bingham, 1854 of LA and Chloe? J Bingham wife, 1857, TX; married 23 yrs. I believe Abner to be son listed as P A Gregg on 1880 record. John Bingham may have been married to one of the Gregg daughters before marriage to Chloe who indicates father was from Iowa.
Cleo J Bingham and John R family was in Guadalupe Valley, Guadalupe, Texas in 1880 record.
I did not find Jessie J Gregg in the 1900 record...seems like he should have been in Travis county in 1900?
1930; Precinct 4, Burnet, Texas; Roll: 2303; Page: 6A; Enumeration District: 11; Image: 221.0.
Jesse J Gregg, age 49, married at age 20, owned farm on Spicewood & Marble Falls Road.
Emma, age 45, married at 16
Bervis or Bernis ?, son, age 8
John G Gregg, father, age 76, widower, married at age 21.
W Fred Gregg, 1887, also owned stock farm on Spicewood/Marble Falls Rd.
Ava wife, appx 1891
Bernice, dtr, 1919
1880 - Precinct 3 And 4, Kerr, Texas
Family History Library Film 1255315
NA Film Number T9-1315 Page Number 255B
J. GREGG Self 68 MO Farmer KY KY
M. A. GREGG Wife 42 AR TN ---
L. C. GREGG Dau 16 TX MO AR
Rosa GREGG Dau 12 TX MO AR
James GREGG Son 7 TX MO AR
A. GREGG Dau 3 TX MO AR
P. A. GREGG Son 1 Month Tx --- ---
1880 -District 127, Travis, Texas
Family History Library Film 1255329
NA Film Number T9-1329 Page Number 145C
John GREGG Self 26 TX Farmer VA VA
Georgia A. GREGG Wife 24 TX TX TX
Jacob H. GREGG Son 2 TX
Aug. B. SCOTT Other Male 20 TX Farm Hand TX AR
[age and location fits except for parents place of birth for John; John may not have been person who spoke to enumerator]
Gregg's not found in 1870 record.
13 Aug 1860: Austin, Travis, Texas Post Office: Austin
Roll: M653_1306 Page: 297
J Gregg, male, age 47, farmer, no real estate, $160 personal wealth, born MO
E Gregg, female, 18, MO
E P Gregg, female, 14, TX
W Gregg, male, 9, TX
J Gregg, male, 7, TX...this must be John ?
W A Gregg, female, 5, TX
J I ? Gregg, female, 4, TX
13 Sept 1850, Travis, Texas
Page: 147 Roll: M432_915
Jerimiah Gregg, 36, farmer, $180 personal wealth, MO
Margaret Gregg, 26, Indiana
Rebeca Gregg, 13, MO
Keseah? Gregg, female, 9, MO...listed as E. on 1860 record ?
Elissa Gregg, 3, TX...listed as E P on 1860 record
Albert Gregg, 1, TX...possibly male listed as W on 1860 record ?
...Margaret must have died about 1856 ?http://www.rootsweb.com/~usgenweb/tx/txsearch.html
...births prior to 1926 not online through Rootsweb.
Lewis, Clinton Gregg 9-22-1927, Williamson Co
Lewis, Wanda Mozelle 3 Nov 1929, Williamson Co
Ava Beatrice Gregg - Vernon Bruce Lewis
Burnet County, Texas -Haynie Flat Cemetery
By Paul W. Smith firstname.lastname@example.org
Gregg, Marie Feb 22, 1913 Apr 23, 1913
Gregg, Oscar Mar 11, 1921 Mar 18, 1921
Gregg, Jesse J. 1880 1960
Gregg, Emma 1885 1967
Gregg, William Fred Mar 15, 1887 Nov 13, 1967
Gregg, Ava Jane Dec 24, 1890 Oct 30, 1980
Gregg, John G. Nov 11, 1853 June 28, 1931
Neumann, Billie Jean 2 Nov 1929, Burnet
Myrtle Gregg - Edgar Neumann
1930, Pct 4, Burnet, same page as Jesse and Emma Gregg
Edgar Neumann, age 24
Myrtle, age 23, married at 20
Billie G, dtr, age 4 mos
Gregg, Gary Vernon 30 Jan 1940, Travis Co
Dolleva Jane Edwards - Jess Vernon Gregg
Birth Date: 19 Jan 1907
Death Date: May 1991
Travis County, TX - Cemeteries: Collier Cemetery
Saturday, February 02, 2002
Submitted by: Paul W Smith <email@example.com
Gregg, Edna R. Aug 23, 1886 July 17, 1985
Gregg, Philip A. Apr 6, 1917
Gregg, M. A. 1838 1916
Gregg, J. 1813 1900 ...died after 21 June.
Gregg, Jim No Dates
Gregg, James A. 1906 1968
Gregg, Fred F. June 5, 1912 Mar 12, 1992
Gregg, Mrs. M. L. Jan 15, 1855 Feb 19, 1923
Gregg, W. R. Feb 12, 1851 Apr 18, 1924