I know the name Kerr could be correct, but this is what threw me - the name Bell. I can't find her birth, or their marriage though there is a death for her in 23 Sept 1854 aged 30 (of decline) - that would have been 3 years after Samuel was born, and 12 months before William married Jane Grieve when Samuel was just 2 years old in the 1861 census.
This marriage looked likely, but the year would be wrong.
Name:
Elizabeth BellGender: Female
Marriage Date: 18 Jul 1845
Marriage Place: Barony,Lanark,Scotland
Spouse:
William MclachlanFHL Film Number: 0994192, 0994193, 0994194, 0994195, 1041481, 0994191
1851 census
Name: William Laughline
Age: 24
Estimated Birth Year: abt 1827
Relationship: Lodger
Gender: Male
Where born: Ireland
Parish Number: 622
Civil Parish: Barony
Phillimore Ecclesiastical Parish Maps:
View related Ecclesiastical Parish
County: Lanarkshire
Address: 524 Duke Street
Occupation: Labourer - Brickfield
ED: 5C
Page: 13
Household schedule number: 48
LINE: 9
Roll: CSSCT1851_145
Household Members:
Name Age
John Bell 34
Margaret Bell 30
Margaret Bell 15
John Bell 12
Elizabeth Bell 10
Jane Bell 7
Mary Bell 4
William Bell 11 Mo
William Laughline 24
Elisabeth Lanchline 24
Samuel Lanchline 2 MoSource Citation
Parish: Barony; ED: 5C; Page: 13; Line: 9; Roll: CSSCT1851_145; Year: 1851
Source Information
Ancestry.com. 1851 Scotland Census [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2006.
Original data: Scotland. 1851 Scotland Census. Reels 1-217. General Register Office for Scotland, Edinburgh, Scotland.
It seems they were boarders, with the Bell family - her brother perhaps?
In 1841
Name: Elizabeth Bell
Age: 14
Estimated Birth Year: abt 1827
Gender: Female
Where born: Lanarkshire, Scotland
Civil Parish: Gorbals
County: Lanarkshire
Address: Eglinton Street
Occupation: Worsted Spinner
Parish Number: 644/2
Household Members:
Name Age
Robert Bell 40
Ann Bell 40
Janet Bell 20
Margaret Bell 15
Elizabeth Bell 14John Bell 12
Robert Bell 5
James Bell 3
In 1851
Name: Elizabeth Bell
Age: 24
Estimated Birth Year: abt 1827
Relationship: Daughter
Father: William Bell
Mother: Mary Bell
Gender: Female
Where born: Barony, Lanark
Parish Number: 652
Civil Parish: Old Monkland
Phillimore Ecclesiastical Parish Maps:
View related Ecclesiastical Parish
Town: Barrachnie
County: Lanarkshire
Address: Flocks
Occupation: At Home
ED: 31
Page: 18
Household schedule number: 64
LINE: 16
Roll: CSSCT1851_171
Household Members:
Name Age
William Bell 49
Mary Bell 49
Elizabeth Bell 24Mary Bell 18
William Bell 15
James Kinniburgh 19
Hmmmm I dont think that is right, as Elizabeth is in two 1851 censuses aged 24 in both
Meanwhile I will look up your suggestions and get back to you.