The Black Swan appears in records dated 1686 and 1704 and was almost certainly on the High Street.
Extracts from the Act for the Cambridge Turnpike, 1724-25 , from Fowlmere to Cambridge (11 Geo. I, c. 14).
In 1724, it was recorded that a small working group formed from the Trustees commissioned by Act of Parliament to instigate and maintain the turnpike road were to hold their first meeting at the Black Swan on 2 April 1725. Incidentally, the large and distinguished membership of the Trustees included an Antony Pemberton and a Samuel Pepys.
The Victoria County History (VCH) (1982) includes a summary of the different pubs, p. 250-51. See the bibliography for full details.
If you have any further information about this or the other pubs in Trumpington, we would be very interested to hear from you.