Alexander was born in 1817 in Argyll, Scotland.
In 1839 they came to the United States on the Marion. 
"Alexander McDonald and family settled on eighty acres of land being the southern part of the farm now owned by Hugh Smith. About this time there was a saw mill near the Abbie Farm on the Beaver Creek where the settlers could bring logs and have them sawed into lumber. The McDonald house was framed like a barn and bricked on the inside. The McDonald family consisted of six sons and one daughter, the youngest who died in infancy. The parents both died, leaving six orphan boys. The family had to be separated. William, the oldest, made his home with James Picken, Alexander with William Harvey, Robert and John lived with their Uncle Robert Howie, James made his home with Hugh Reid, and Andrew, the youngest, with Andrew Giffen. The farm was sold to William Ferguson and the house was used for a school for a time" 
Have you taken a DNA test for genealogy? If so, login to add it. If not, see our friends at Ancestry DNA.