My grandmother [Daisy McKean] was born in Preston, Ontario [in 1912]. Her Ontario birth place is listed at a Hospital on Jacob Street. Would you know the name of that hospital so I can update my recordsThis is a very good example of a slight misinterpretation of a document. I checked Ancestry.com for Daisy's birth registration so that I could verify Brenda's statement "her birth place is listed AT A HOSPITAL ON JACOB STREET" (upper case mine for emphasis)
See if you can spot Brenda's misinterpretation of little Daisy's birth record below. It was an easy mistake to make. It's to read documents carefully. Read the instructions to the clerk/minister/whoever filling out the document. Read the small print on the document.
Daisy's birth registration shows the instructions to the left of the field where "Jacob Street" is written in.
It was most likely her parents' home on Jacob St. but we do not know that with certainty. Her grandmother was the informant and genealogists must keep an open mind as to whose house the child was born in. Perhaps Grandma lived on Jacob St. and Daisy's mother went there to have her child.
I suggest looking at 1911 census and 1921 to see if the family was living on Jacob St. I would also check Voter's lists to see if the parents can be found there.