I am not sure if the first building here, in Merton Street, is a private residence or, maybe, a building used by Oxford University.

The centrepiece of Merton Street is Merton College, founded in 1264. But Merton College is on the opposite side of the road. So, whether this building has any connection to Merton College I don't know :-) I will have to check things out on my next visit, I think :-)

Below is an Extract from 'OXFORDVISIT' -

oxfordvisit.com/places-to-see/places-to-see-oxford/passages-lanes-streets/oxfords-merton-street/#google_vignette

"Merton Street is one of Oxford’s most picturesque and historic streets, offering a unique glimpse into the city’s medieval past. Located in the heart of Oxford, it runs parallel to the High Street and is home to several significant buildings, including Merton College, one of the oldest and most prestigious colleges at the University of Oxford. Merton Street is steeped in history, with its origins dating back to medieval times. The street’s cobblestones and narrow layout give it an authentic old-world charm that reflects Oxford’s long academic and architectural heritage. Walking down Merton Street, you are surrounded by buildings that have witnessed centuries of scholarly activity and historical events."