Cowan, Samuel. The Ruthven family papers : London, Simpkin, Marshall, Hamilton, Kent & co. ltd., 1912

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William of Ruthven, who paid a fine for the relief of Newton, in Edinburgh, in 1330. He died before Easter 1346, having been slain at the battle of Durham, and left issue, it is supposed, William and Margaret. The latter in 1346 married Sir John Seton, son of Alexander Seton of that ilk.