Robert the Second who was the first Stewart king of Scotland married, as his second wife Euphemia,( the daughter of Hugh, sixth Earl Ross and Margaret Graham). King Robert' and Euphemia's son David, born about 1356, married a lady whose name is not recorded, thought to be a daughter of Alexander Lindsay of Glenesk. David's daughter, Euphemia, born circa 1375 married first Sir Patrick Graham of Dundaff and Kilpont. Their children were 1. Malise Graham,Earl of Strathern 2.Euphemia Graham 3.Elizabeth Graham. Euphemia Stewart married secondly Sir Patrick Dunbar of Bele and had sons Patrick and George. This information is from British historian Alison Weir's book Britain's Royal Families. I will go through my other Scottish history books for other Euphemia Stewart entries and if any different ones are found, add them in COMMENTS