I think you may find that his mother was Margaret not Mary
WALTER LITTLE Christening: 29 APR 1850 Castleton, Roxburgh
Father: JOHN LITTLE Mother: MARGARET PATTISON
1851 census for Castleton - all born Castleton
John Little 45 labourer
Margaret 45
Jane 13
Mary 10
Andrew 6
Annie 4
Walter 1
Margaret Ballantyne dtr 21
Robert Ballantyne 31 son in law
John Ballantyne 8 Months g/son
Castleton ED 3 Page 17 Line 5
IGI
ROBERT BALLANTYNE Spouse: MARGARET LITTLE
Marriage: 07 DEC 1850 Castleton, Roxburgh
The following instructions will give you various baptisms etc
PARENT SEARCH ON IGI
http://www.familysearch.org/Eng/Search/frameset_search.asp?PAGE=igi/search_IGI.asp&clear_form=true Input fathers name and surname and mothers christian name and maiden name
REGION – select British Isles from the menu
COUNTRY – select Scotland
COUNTY (will appear when you select COUNTRY) – select Roxburgh
Click SEARCH