Question: Who is Alexander Lyon, 2Nd Lord Glamis's paternal grandmother?
Sentence (from "Patrick Lyon, 1st Lord Glamis"): He was the son of Sir John Lyon of Glamis (c.1377–c.1435) and Elizabeth Graham, daughter of Sir Patrick Graham of Dundaff and Kincardine and Euphemia Stewart, Countess of Strathearn.
Relevant evidence: Yes