Why is the name of Michelangelo written as "Michael Angelo" and why doesn't the Gallery correct this?

Today it is the standard practice in the English speaking world to refer to the great Italian sculptor, painter and architect Michelagnolo Lodovico di Lionardo Buonarroti Simoni [1475-1564], by the name by which he was known to his Italian contemporaries 'Michelangelo'. The name is commonly spelt 'Michelangelo' these days, but variations have abounded. Sir Charles Eastlake, in his influential two volumed Handbook of Painting: the Italian Schools [1837], spelt the name as 'Michael Angelo'. The greatest critic of the 19th century, John Ruskin, also preferred this spelling of the name, so it is not surprising that the Trustees followed these authorities.

(Research by Steven Miller, Archivist)