TIR-ROSSER-with-BLAENAU (TIR-RHOS-HIR), a hamlet, in the parish of LLANDEBIE, hundred of ISCENNEN, county of CARMARTHEN, SOUTH WALES: the population is included in the return for the parish. The name signifies " the long marshy ground," and is descriptive of the situation of this hamlet among the streams which unite to form the Lou or river.