Margaret was born on February 24th, 1865 in Paisley.12
Birth Notes
Name: Margaret Donald Gender: Female Birth Date: 24 Feb 1865 Birthplace: ABBEY PAISLEY,RENFREW,SCOTLAND Father's Name: William Donald Mother's Name: Janet Towers Indexing Project (Batch) Number: C11559-1 , System Origin: Scotland-ODM , GS Film number: 6035516
"Scotland, Births and Baptisms, 1564-1950," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FQ4X-MPN : accessed 15 Aug 2014), Janet Towers in entry for Margaret Donald, 24 Feb 1865; citing ABBEY PAISLEY,RENFREW,SCOTLAND, reference ; FHL microfilm 6035516.
16 in 1881 census, so born between 4-apr-1864 and 4-apr-1865