Known siblings of James, born in Ireland are: Eliza Jane (or Elizabeth) (1818), Mary (1820) and Isaac (1824).
Children's names of James and Maryann Woodburn (all born in Ottawa, Canada) are: Isaac Smyth, Augustus, Alexander Mayne, James Wellington, Frederick Hunter and Andrew Cochrane. Maryann Woodburn's mother was a Mayne, so I think maybe the other middle names may be clues but I haven't found any yet. Family lore says they were from Donegal, but someone else found that maybe Eliza was born in Tyrone. Somewhere along the line "traveller" was mentioned. 40 years of trying and I can't find a birthplace for my James.
Any help or ideas appreciated!