Denise ferch Thomas ap Philip Fychan of Iscoed or Tyle-Glas (1414-1457) (1414–1457) Parents Alice ferch Sir Watkin Llwyd ab Ieuan ap Watkin Thomas ap Philip Fychan (Vaughan) ap Gwilym of Tyle-Glas or Iscoed Children Gwenllian ferch Roger Vaughan Catherine Vaughan, of Tretower Eleanor Vaughan Roger Vaughan Thomas Vaughan Siblings Mawd ferch Thomas ap Philip of Tyle-Glas Philip ap Thomas Vaughan William (Herle) of Stoke Bishop|Bliss Annes ferch Thomas Fychan Vaughan, of Tyleglas