In a document of 1468 the road is called "Graysynlane, otherwise Portpole Lane". Today's Portpool Lane, which leads off Gray's Inn Road to the east, is a separate road which is not mentioned before 1641.
A record from 1468 refers to the road as "Graysynlane, otherwise Portpole Lane." Today's Portpool Lane, which begins at Gray's Inn Road and extends towards the east, is its own separate road that wasn't mentioned before 1641.