Here are the 1861 and 1871 Scotland census details copied from Ancestry for Catherine Fehrenbach and her family (presumably John had died between 1851 and 1861):

******************************************

1861 Scotland Census
about Cathrine Fhrinback
Name: Cathrine Fhrinback
Age: 33
Estimated birth year: abt 1828
Relationship: Head
Gender: Female
Where born: Ireland
Registration Number: 135
Registration district: Elgin
Civil parish: Elgin
County: Moray
Address: 125 High Street
Occupation: Wacher & Dresser
ED: 3
Household schedule number: 105
Line: 2
Roll: CSSCT1861_19
Household Members: Name Age
Cathrine Fhrinback 33
Mary Ann Fhrinback 13
Amelia Fhrinback 9
John Fhrinback 7
Bridget Fhrinback 5
Henry Fhrinback 3
Margaret Fhrinback 3 Mo

**********************************************
**********************************************

1871 Scotland Census
about Catherine Fahrnbick
Name: Catherine Fahrnbick
Age: 42
Estimated birth year: abt 1829
Relationship: Head
Gender: Female
Where born: Dangallion, Ireland
Registration Number: 130
Registration district: Drainie
Civil parish: Drainie
County: Moray
Address: Baker St
Occupation: Shop Keeper
ED: 4
Household schedule number: 142
Line: 21
Roll: CSSCT1871_24
Household Members: Name Age
Catherine Fahrnbick 42
Henry Fahrnbick 14

***********************************************
I tapped "John Fehrenback b 1822 Germany" into Ancestry trees and amazingly, there is a tree which contains the following information:

1846
11 Oct
Age: 24

Marriage to Catherine McGoan
Dungannon, Ireland
******************************************
********************************************
Spouse & Children

Catherine McGoan
1828 – 1871

Mary Ann Fehrenback
1849 –

Britchet Fehrenback
1850 –

Amelia Fehrenback
1851 –

John Fehrenback
1853 –

Brigetta Fehrenback
1856 –

Henry Gall Fehrenback
1858 – 1937

Margaret Lucy Faggan Fehrenback
1861 –

**********************************************
It seems that Catherine's surname of McGoan is another version of McKeown. This is her death:
1871
2 Dec
Age: 43

Death
Branderburgh, Moray
*****************************

Another interesting thing is that John and Catherine gave their son, Henry b 1858, a middle name of Gall, and in turn, this Henry gave the same name to his son. This might be why Mary Ann nee Fernbank and Edward Gawne named one of their daughters Margaret A Gale Gawne.

Have you noticed that Mary Ann was a 3 year old in the 1851 census, so she claimed to be younger than she actually was at her marriage in 1872.

Jean C