The Princess of Wales is next to the Swan in the 1911 census.
Weston pub history index
Directory of Pubs in the UK, historical public houses, Taverns, Inns, Beer Houses and Hotels in Hertfordshire .
Residents at this address
1891/Edward Munt/Bricklayer & Publican/44/Weston, Herts/Census
1891/Emily S Munt/Wife/44/Weston, Herts/Census
1891/John Gun/Boarder, Blacksmith/61/Weston, Herts/Census
The 1911 census summary places a Mr Collins at the Princess of Wales.