1.  Directory of Royal Genealogical Data [link died]  by Brian C. Tompsett.  Does not show a daughter, Eupheme/Euphemia.  Says Burke was inconsistent in numbering the Earls of Morton, so this may not be the one referred to below.  None of the others show a daughter, Eupheme, either.

2.  Sir John Bernard Burke.  1939.  Genealogical and Heraldic History of the Landed Gentry.  16th ed.  Burke's Peerage, London (reprinted 1996 as Burke's American Families with British Ancestry.  Genealogical Publ. Co., Baltimore, MD).  On p. 2572:

CHARLES ANDERSON BOSTON, of New York City, b. 30 Aug. 1863; m. Ethel Gustava, dau. of Edward Lyon, of New York City, a descendant of Richard Lyon, of Perthshire, Member of Cromwell's Army, who emigrated to America in 1648, son of John Lyon, of Auldbar, and grandson of Sir Thomas Lyon, styled Master of Glamis (d. 1608) and his wife, Eupheme, dau. of the 7th Earl of Morton.  Sir Thomas Lyon was the son of John Lyon, 7th Lord Glamis (see BURKE'S Peerage, STRATHMORE, E.).

3.  LDS.  Family Search: Internet Genealogy Service:  AF - Ancestral File (online at FamilySearch.org).