1.  Marriage Index:  District of Columbia, Delaware, Maryland, and Virginia, 1740-1920  (online at GenealogyLibrary.com):

Dell, Ernest B.

Sias, Mary

31 Aug 1898

Carroll Co.

2.  1900 Census Index/Microfilm (online at Genealogy.com):  Election Dist. 7, Pct. 1, Carroll Co., MD, p. 191B, SN 2, SD 3, ED 130, enumerated 2 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

22

23

24

25

27

38

39

Dell Ernest B

Head

W

M

Oct 1875

24

M

+

MD

MD

MD

day Laborer

4

Y

Y

Y

R

H

____ Mary A

Wife

W

F

Dec 1880

19

M

+

2

2

MD

MD

MD

Y

Y

Y

____ Charlie E

Son

W

M

Oct 1899

7/12

S

MD

MD

MD

N

N

N

Sias Annie V

Step Daughter

W

F

July 1895

4

S

MD

MD

MD

N

N

N

The symbols in Column 10 were more like crosses than pluses; I have no idea what they were supposed to signify.