Hello, I hope you can find attached to this post a document showing the Baptism of Bertha Miles...last entry on the page. This is the source that I was unable to send in my earlier response.
Also her parents marriage can be found on the Newfoundland Grand Banks Genealogy site. The site has records from the Church of England, Bonavista transcribed. Marriages and baptisms starting as early as 1786.
Linda Moss