1.  Texas Marriages, 1837-1973 (online at familysearch.org):

Groom's Name:	Frank M. Parrent
Bride's Name:	Ella Farroed
Marriage Date:	16 Apr 1899
Marriage Place:	Mclennan, Texas

2a.  Morrison and Fourmy's General Directory of the City of Waco… (online at Ancestry.com):

1894-95	p. 222	Parrent, Frank M., appc plumber McGinty & Rogers, h. E. J. Parrent.
1896-97	p. 242	Parrent, Frank M., jr., plumber Rogers & Burney, h. E. J. Parrent.
1900-01	p. 135	Parrent Frank M., Plumber, steam, gas fitter, pumps, pipe, hose, gas, steam fixtures, 622 Franklin, phone 205, r. 416½ S. 5th.

2b.  Morrison and Fourmy's General Directory of the City of Fort Worth… (online at Ancestry.com):

1895-96

p. 298

Parrent Frank M., plumber, bds Mrs. Elizabeth White.

3.  1880 Census Every-Name-Index/Images (online at Ancestry.com):  Ella A. FARROW (æ 4, b. TX/AL/TX) is living in Milam Co., TX (p. 345A-345B), with her parents, R.S. FARROW (æ 27, b. AL) & Jemima W. (æ 23, b. TX), plus siblings.

4.  1890 Census:  the 1890 Census Population Schedules were destroyed.

5.  1900 Census Every-Name-Index/Images (online at Ancestry.com, Image #21-22 of 25):  416½ South 5th, Waco (Ward 4), Precinct No. 1, McLennan Co., TX, Roll T623_1656, pp. 267A-267B, SN 11-12, SD 9, ED 77, enumerated 6 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

*

414½

208

229

Parrent Everett J

Head

W

M

Nov 1842

57

M

33

MS

MS

MS

Carpenter

6

Y

Y

Y

R

H

_______ Missouri E

Wife

W

F

Jan 1852

48

M

33

8

6

TX

MS

LA

Boarding House Keeper

0

Y

Y

Y

_______ Frank M

Son

W

M

Feb 1878

22

M

1

TX

MS

TX

Plumber

0

Y

Y

Y

_______ Ella A

D-in-Law

W

F

Jul 1875

24

M

1

0

0

TX

LA

TX

Y

Y

Y

_______ William H

Son

W

M

Apr 1880

20

S

TX

MS

TX

Y

Y

Y

_______ Thomas W

Son

W

M

Dec 1883

16

S

TX

MS

TX

Laborer (Saw Mill)

2

Y

Y

Y

_______ Nellie

Dau

W

F

Jan 1888

12

S

TX

MS

TX

At School

9

Y

Y

Y

*South 5th

6.  1910 Census Every-Name-Index/Images (online at Ancestry.com):  There is a Mrs. F. M. PARRENT (æ 35, b. AR/AR/AR; widow) living in a rooming house in Dallas (Ward 4), Dallas Co., TX (p. 66B).  The birthplaces are wrong, but it could be Ella, but if so, where's Thelma?  Otherwise, I can't find Ella or Thelma, and I really looked.

7.  1920 Census Every-Name-Index/Images (online at Ancestry.com):  can't find.

8.  1930 Census Every-Name-Index/Images (online at Ancestry.com):  can't find.

9.  Waco Times-Herald, 1903 (online at the McLennan County TXGenWeb site)

Tue., July 7 (5-3): Frank Parrent, who was injured by a negro in Dallas, has died.

Is this our subject?  It would certainly explain his dissapearance after the 1900 census.

10.  Texas Deaths, 1890-1976 (online at FamilySearch.org):

Name:	Alice Ella Parrent	Thelma L. Harvey
Death Date:	06 Apr 1956	27 Jul 1959
Death Place:	Dallas, Dallas, Texas	Houston, Harris, Texas
Gender | Race:	Female | White	Female | White
Birth Date:	26 Jul 1876	About 1903
Birthplace:	Alabama	Texas
Marital Status:	Widowed	Married
Father's Name:	Robert S. Farrow	Frank Parrent
Father's Birthplace:	Alabama
Mother's Name:	Jemima Whitfield	Ella Alice Farrow
Mother's Birthplace:	Texas
Occupation:	Retired Housewife Dallas, Texas	Telephone Op. Houston, Harris, Texas
Burial Date:	10 Apr 1956	31 Jul 1959
Cemetery:	City Dallas, Texas	Morales Cemetery, Houston, Harris, Texas

I didn't extract it, but another death record there shows Robert's middle name is Samuel.

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