121, High Holborn (WC1) The space between Southampton Row and Montague Street was formerly occupied by the gardens of Southampton House. This splendid mansion, which extended along the whole of the north side of Bloomsbury Square, with a spacious courtyard in front towards Holborn, was, in the days of Charles I and II, the princely residence of the Wriothesleys, Earls of Southampton. Gray, the poet, lodged here at one period. (Reference: Jesse's London, vol. III, p. 129)