Yes Ross, and thanks for your help.
Mary Hazeldine Auld, daughter of Susannah Roper and John Auld, was born March 28, 1859 on Bannockburn Road, North Wiltshire, PEI. She was baptised October 27, 1861 by Thomas Duncan at St. James Kirk, Charlottetown, PEI. Record Book No. 1: Page 35:
Mary Hazeldine Auld Married William Warren Harper on December 29, 1880. He was born October 28, 1856 in Charlottetown, PEI. He died November 14, 1919. He married two more times.
Mary Hazeldine (Auld) Harper died April 20, 1885 age 26 years. She is buried in Sherwood Cemetery.
William Warren Harper than married (2) Agnes Gillespie March 27, 1887; and (3) Ada Emily Lane December 24, 1891.
He had 3 sons, Harold, John, and Lorne; and 4 daughters; Helen, Ruby, Mildred and Edna who were all at home when he died.
I believe that Ada Emily Lane's children were Ada Helen Harper and Edna Blanche Harper, ad Lorne Harper. (Though not sure.) (Forget why I thought that as I can't find a note)
This information I found in newspaper archives-Robertson Library, PEI University. Guardian November 15, 1919: Saturday: Page 3:
MY QUESTION IS - OF THE SEVEN CHILDREN WERE ANY MARY HAZELDINE' (AULD) HARPER'S?