My great-grandmother, Christina Mackenzie, is listed as the head of the house, 17 Pulteney Street, Ullapool, on the 1911 census.
She had been widowed in 1890 and was left with three children.
By 1911, two of the children were married and away from home, leaving her with only one son at home in 1911, and he was 29 years old.
On the census, Christina, aged 64, has a boarder living with her, Alexander Macrae, aged 59, single, speaking Gaelic and English - but the strange thing is that the census states that he was born in England, and is classed as a lunatic, and doesn't seem to have employment.
Why would my great-grandmother be taking in lunatic boarders? Surely she wouldn't have been that desperate for money........(and heaven knows there was enough lunacy in her family anyway, due to the inbreeding coming from Rhearabach / Scoraig

)
On the valuation roll of 1895, Christina is living in the same house, and is described as a widow and a pauper.
I can't find her on the 1905 valuation roll, but in 1915 and 1920, she is shown as the proprietrix of number 17 Pulteney Street.
I have found a death record, in 1918, for an Alexander Macrae, aged 66 years, who died in Pulteney Street, a single pauper. He must have been illegitimate because only his father, Philip Macrae is mentioned on the death certificate. The death was registered by D Ross, Inspector of Poor.
I did hope that Alexander might have had a stash of cash under the mattress which he had left to Christina enabling her to buy number 17

How could I find out where this Alexander Macrae came from? Why did someone born in England speak Gaelic? Why was my great-grandmother taking in boarders, especially lunatic ones? Was a financial incentive given by the Poor Board?
A total, intriguing mystery.