CREATE TABLE table_37791 ("County" TEXT, "Irish name" TEXT, "County town" TEXT, "Most populous city/town" TEXT, "Province" TEXT, "Region" TEXT)

Most populous city/town of clonmel, and a Irish name of tiobraid rann (contae thiobraid rann) is which region?
SELECT "Region" FROM table_37791 WHERE "Most populous city/town" = 'clonmel' AND "Irish name" = 'tiobraid árann (contae thiobraid árann)'
SELECT "Region" FROM "table_37791" WHERE "Irish name" = 'tiobraid árann (contae thiobraid árann)' AND "Most populous city/town" = 'clonmel'