Thanks so much SelDen!!
I've spent quite a lot of time on my Traveller families, and they can be a tough group to substantiate information on, so I do the best I can. I should have indicated I do have a copy from the original register I had found some years back by browsing at familysearch for Matthew Todd's birth. My eyes are poor, but I believe it says "Christenings in the Parish of Warkworth: 1802 Aug 22 Matthew Todd is son of Robt Todd and Isabella Anderson born June 14".
Matthew's second marriage in Ontario was to maiden name Margaret Orr. Margaret was previously married to my John McMullan in Ireland, and second to John Hinds in Toronto. Matthew married her when she was widowed in 1865, and they lived at Fergus, Ontario. Margaret's son, (my G Grandfather) William J McMillan married Matthew's daughter Anderson Todd at Fergus in 1867.
Matthew Todd died at Fergus in 1878 shown as a horse dealer, and Margaret reported that he was about 76 years old at death, and the death record showed he was born at Warwick, Northumberland, England (I assume Warkworth is correct). I think the only census showing him born in England was the 1841 Scotland census, and others showed him born in Scotland, so I was a bit surprised. Also, a marriage record to Margaret showed his parent's as Robert and Isabella.
Matthew's first wife was Helen Drummond of Scotland, and the Drummond family were also Scottish Travellers.
I did find an interesting news article from the 1760s, about an Alexander Anderson who had lived at Rothbury, who was shown as a tinker, who might be Isabella's father.
So, the information I'm still interested in proof for, is Robert Todd's parent's for the time being.
Thanks!! Tom McMillan