The story
- French · calque ofColline parlementaire
- English todayParliament Hill
From parliament + hill. * (Ottawa): From being a rise and promontory over the Ottawa River hosting parliament buildings. * (Quebec): Calque of French Colline parlementaire From being a rise and promontory over the Saint-Lawrence River hosting parliament buildings. * (London): From being a gathering place for troops of the Parliamentarians (Roundheads) during the English Civil War. Apocryphally, the location where the Gunpowder Plot was planned, to blowup the Palace of Westminster (Parliament).
Etymology from Wiktionary, CC BY-SA 4.0.