Great messuage in parish of St. Gabriel Fanchurche in Fanchurche Street, which belonged to Halywell Nunnery, abutting on the common high street south, a garden belonging to the Fishmongers Society north and west, the house of one Gynkynsons east and a certain "le Alley" formerly called Mursyns Alley West, 34 H. VIII. 1542 (L. and P. H. VIII. Dom. S. XVII. p.643).
Described as " Murfyns Alley " in 1543 (ib. XVIII. Pt. I, 127).
It seems to occupy the site of the present " Pen Court " (q.v.).
Probably named after the owner or builder.
A Dictionary of London. Henry A Harben. 1918.