Ryde pub index
I am almost certain these are the same pub, the Harlequin being renamed the Nelson tavern between 1855 and 1859
Directory of Pubs in the UK, historical public houses, Taverns, Inns, Beer Houses and Hotels in the Isle of Wight.
Residents at this address
1849, William Gardner, Harlequin inn, Belle Vue road - post office directory
1851/William Gardner/Licensed Victualler/58/Thames, Oxfordshire/Census
1851/Mary Gardner/Wife/57/St Helens, Hampshire/Census
1851/Thomas Gardner/Son, Carpenters Journeyman/23/St Helens, Hampshire/Census
1851/George Gardner/Son, Cabinet Makers Apprentie/18/St Helens, Hampshire/Census
1851/John Gardner/Son, Watchmakers Apprentie/16/St Helens, Hampshire/Census
1851/Eliza Cass/Servant/21/St Helens, Hampshire/Census
1851/Jane Fluss/Servant/15/Arriton, Hampshire/Census
1852/William Gardner/Harlequin, Bellevue road/../../Slaters Directory
1855/William Gardner/Harlequin, Bellevue road/../../Post Office Directory
1859/William Gardner/Nelson tavern, Bellevue road/../../Whites Directory
1875/John Dive/Nelson, Bellevue road/../../Post Office Directory