Douglas - or Daglass, Dagless or Dagloss?

[William Douglas]

John Dagless was a blacksmith living in Norfolk. He married Elizabeth Pearson and they has eight children:
Susannah, baptised 14 Apr 1816
William, bap 6 Dec 1819
Richard, bap 28 Dec 1834, born 29/11/1829
Thomas, bap 24 Feb 1822
John Pearson, bap 20 Mar 1814
Elizabeth, bap 9 Nov 1817
Harmer, bap 20 Apr 1834
Daniel, bap 28 Dec 1834, born 08/03/1826

All baptisms were in Burgh-next-Aylsham, Norfolk, England

John Pearson Dagless emigrated to Canada and died there. He married Mary Webb, and had a son, Thomas Pearson Douglas, born 1854 in Northumberland, Canada, who died in Bruce, Ontario, Canada. John Pearson Dagless Snr has been recorded as John Percy Douglass

I have a note that John Charles Daglass moved to Canada and changed his name (or it was changed for him) to Douglas. but who was he?

I have also noted this:
John Douglas/Douglass/Dagless  was born Northumberland, England, 1815, lived most of his life in Alnwyck, Northumberland. He was the son of John Dagless and Elizabeth Pearson. I think it must be wrong.

My question is this: was John Dagless, the blacksmith a Douglas?