Kristen,
Ancestry does not have the 1910 census indexed so they would not show up there. Below are the Krogs indexed on HQ's CD. Theodore is in ED 400 and Johanne is living in the same building.
Tony

Surname: KROG
Given Name: THEODORE J
Age: 48
Sex: M
Race: W
Birthplace: NORW
County: KINGS
Locality: 17-WD BROOKLYN
T624-Roll: 966
Part: 2
Page: 100
Sub Page: B

Surname: KROG
Given Name: JOHAN A
Age: 37
Sex: M
Race: W
Birthplace: NORW
County: KINGS
Locality: 17-WD BROOKLYN
T624-Roll: 966
Part: 2
Page: 100
Sub Page: B

Surname: KROG
Given Name: BENJAMIN
Age: 46
Sex: M
Race: W
Birthplace: NY
County: NEW YORK
Locality: 22-PCT 35-AD BRONX
T624-Roll: 1003
Part: 1
Page: 261
Sub Page: B

Surname: KROG
Given Name: FRED H
Age: 25
Sex: M
Race: W
Birthplace: MO
County: NEW YORK
Locality: 12-WD MANHATTAN
T624-Roll: 1024
Part: 2
Page: 277
Sub Page: A

Surname: KROG
Given Name: KARL
Age: 45
Sex: M
Race: W
Birthplace: NORW
County: QUEENS
Locality: 3-WD QUEENS
T624-Roll: 1065
Part: 2
Page: 204
Sub Page: B

Surname: KROG
Given Name: CARL
Age: 52
Sex: M
Race: W
Birthplace: GERM
County: SUFFOLK
Locality: 7-DIST BROOKHAVEN
T624-Roll: 1081
Part: 2
Page: 180
Sub Page: B