see Poland Street 1 to 9 & 49 to 62 in London Addresses dataset
Eliza Walpole 1 Poland Street Ratebooks 1788-1789 / Harris's List 1788 Miss R-ss and Miss D-gl-ss (QV* Douglas) at Mrs Walpole's 1789 Miss M-k-y (QV* Mackay) and "Mademoiselle" at Mrs Walpole's 1790 Miss Bromley // 1794 reference to Mrs W of Poland St in Life and extraordinary adventures of James Molesworth Hobart by John Collard
The following only possibly the same person: SunFire 1777 Elizabeth Walpole widow Marshall St Carnaby Market, St James 1778 Elizabeth Walpole widow Ludgate Hill // Elizabeth Walpole bur Edmonton 5.1.1808 age 56 wife of Charles Walpole breeches maker of Church St, Charles Walpole breeches maker of Knightsbridge voted Hood & Fox 1790 // 17.10.1765 William Walpole bach = (St James) to Elizabeth Granger sp botp