Remember these are the figures for the whole parish of Llanwrtyd. The government report which published the figures of the 1841 census gave the population of the hamlet of "Pontrhydyfere" as just 27. This is the hamlet by the Irfon bridge. (To see a map of it around this time click here).

Compare this graph with those of other parishes in the area.
Is the overall trend the same?
If the trend differs, in what way does it differ?
What was happening in the area in the 1860s and 1870s which might have caused the population to rise?

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