She came to the US in 1850. 
She passed away in 1921.
Rockford Morning Star, Wednesday, May 18, 1921 MRS. I. R. M'DONALD ENTERS REST AFTER EIGHTY-EIGHT YEARS
ARGYLE, Ill., May 17 - Mrs. Isabelle Ralston McDonald, a resident of this section for over seventy years and greatly beloved for her helpful and useful life, answered the summons to a better land this morning at 5 o'clock at her farm home, two miles north of Argyle. She injured her hip in a fall several months ago and the burden of her 88 years made her recovery impossible.
Deceased was born in Argyleshire, Scotland, Dec. 14, 1832, and came to America and direct to Argyle in the summer of 1850. Her marriage to Duncan McDonald took place Feb. 24, 1957. Mr. McDonald died May 11, 1885, and three of the six children born to this union have passed on, David, Mary and Martha. The children surviving are John, residing north of Roscoe, and William and Isabelle C. McDonald, living at home. She also leaves two sisters, Mrs Jane Ralston, of Roscoe, and Miss Elizabeth Ralston, who made her home with the deceased.
She joined the Presbyterian church in Scotland and became a member of the Willow Creek church on coming to this country. She radiated hope and cheer to those who were weary and heavy laden and made the world better for the many deeds of kindness she bestowed on those in suffering and need. None knew her but to hold her in the highest esteem. Funeral services will be held Thursday afternoon at 2 o'clock at the late residence. the Rev. Edgar W. Smith officiating. Interment will be made in the Argyle Cemetery.
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