Barbara responded: TREGUNNA (Cornish) habitation name, probably from a place in the parish of St. Breock, so called from Cornish 'tre' (homestead, settlement + a second element of unknown form and meaning). This name, or its variations may also be from various places called 'Tregon(n)a' or 'Tregenna', which are likewise from 'tre' + an unknown second element. One variation: Tregunno means 'a place in the parish of Breage'. =============== The "gunna" element was a personal name from the Old Norse which meant "war," "battle," or "cannon," or all of these meanings at different times. The word is related to the weapon we call "gun." Gary