At the time of Christianna's christening, the family was living in Burniston, Yorkshire, England.
IGI Individual Record Family Search International Genealogical Index v5.0 British Isles
CHRISTIANA SEDMAN Female Christening: 10 JAN 1813 Scalby Near Scarborough, Yorkshire, England 
Parents: Father:  JOHN SEDMAN Mother: ANN  
Source Information:Batch No.: C106411 Dates: 1813 - 1841Source Call No.: 0919204 Type: Film Printout Call No.: 6910826 

There is a Esther Redmond living with the family on the 1871 census.  She is listed as being 1/12 and born in Feb.

The informant on her death registration is Wm. Redmond, East Garafraxa.
Ontario, Canada Deaths, 1869-1932 Record info about Christena Redmond
Name: Christena Redmond Death Date: 24 Jun 1890 Death Location:Dufferin Gender: Female Estimated Birth Year: abt 1810 Birth Location: England