According to an unverified LDS record, James was born about 1510 and died about 1580. James is sometimes referred to as "of Baldorran" or "3rd Baillie of Balquhidder" although he later lost both of these designations. James sold Baldorran to the Glorat family, although Duncan Stewart's geneaology (1739) indicates that it was his father, Walter, who sold Baldorran to William Livingston of Kilsyth ca. 1524.
James' birth is recorded as illegitimate and later legitimized under the Great Seal in 1533. It's not known if he is the child of Euphemia Reddoch before his parents were married or if he is the child of another mother. Since no record of another mother is anywhere inferred, the first theory is presently preferred.
John married the daughter of his first cousin, Patrick Stewart, 2nd of Glenbuckie. James also had a natural son, Patrick, by an unknown MacLaren mistress. As natural sons were either born pre-or post-lawful marriage, then, assuming John's wife did not die prematurely, it's more likely that Patrick was born prior to James' marriage. Patrick is said to have received a life lease for the farm of Lednascridan about 1533, however as Patrick could not have been an adult to receive property in 1533, and as this date coincides with the legitimizing of James' own birth, then it would seem more likely that Patrick was born about 1533 and that he may have received a promise of Lednascridan at his birth to be fulfilled upon reaching adulthood. (See notes on Patrick for more information.)
(One account incorrectly indicates that James came to Balquhidder in 1490, which is actually the year that his grandfather received the bailieship, and James could not have been born that early.) After selling Baldorran and losing the bailieship James is believed to have settled in Creaggan, Strathyre, Balquhidder, Perthshire
(http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=ryk%5Fbrown&id=I1477)