Possibily as it was in Douglas rather than Braddan - Douglas Poor House might have been it (though work house would have been English name) - H of I was a Manx special - partly funded by Government money + subscriptions to get it built, running costs to be borne by subscriptions (te Manx tried hard to avoid levying any rates as would have been the case in England) - not till after the Lunatic Asylum valuation and the establishment of Douglas did rates become accepted means of finance.
No I think this was a parish based and something rings a bell of out near Tromode