Hi JackF,
Can't help with MI's, but is this of any use?
Selkirk 1851 Water Row.
Thomas Scott H M 50 Tailor Selkirk,Selkirk.
Margt. W M 48 Nthumberland,Hexham.
Margt. D U 20 House Maid Selkirk,Selkirk.
William S U 16 Tailor or Twiner Selkirk,Selkirk.
George S 14 Tailor Selkirk,Selkirk.
Robert S 12 Scholar " "
Jessie D 10 " " "
Margt. G/D 5 " " "
They seem to fit the bill.