Tamas, Thom, Thomas, Thomason, Thompson, Thomson, Tomas, Tomasett, Tomek, Tomey, Tomie, Tomislaw, Tomkin, Tomlin, Tomlinson, Tommey, Toombs
A biblical name derived from the Greek didymos 'twin'. Adopted heavily in religious Middle Ages. Popular Welsh surname in use in Wales and worldwide. Appears predominantly in Glamorganshire, Carmarthenshire and Pembrokeshire. Thought to be the 4th most popular surname in Wales.