THOMAS2 is the sick man whom the greedy friar visits in The Summoner's Tale. When the friar asks for a donation at the end of the sermon, Thomas gives him a big surprise.
The name occurs six times initially, SumT 1772, 1942, 1961, 1970, 1974, 1978; eleven times in medial positions, SumT 1770, 1815, 1918, 1954, 1966, 1992, 2000, 2089, 2107, 2112, 2119. It never appears in final rhyming position.