- Two messuages in parish of St. Dunstan in le East between the tenement of John Gy east, the way called" Porteslane " west, the way called " Tourstrete " north, and the cemetery of the church south, 9 H. IV. 1408 (Cal. P.R. H. IV. 1405-8, p.460).Earliest mention: " Pourteslane," 1368-9 (Ct. H.W. II. 124).This lane must lie between Idol Street and St. Dunstan's Hill and may perhaps be identical with" Preist Alley" (q.v.) shown on the maps.
A Dictionary of London. Henry A Harben. 1918.