Source: Johnston, Alexander, Jr., Genealogical account of the family of
Johnston of that ilk, formerly of Caskieben, in the Shire of Aberdeen, and of
its principal branches. Edinburgh, 1832.
This gentleman [John de Johnston] acquired the lande of Ballindauch in
Aberdeenshire. He married Marjory, daughter of Leighton of Ulysseshaven or Usan,
an ancient family in Angus, and in her right succeeded to the lands of Invertown.
He lived to a very advanced age; and dying in the reign of King James the First
of Scotland was succeeded by his son.