Image: John Martyn from NPG

Description: John Martyn, by unknown artist. See source website for additional information. This set of images was gathered by User:Dcoetzee from the National Portrait Gallery, London website using a special tool. All images in this batch have an unknown author, but there is strong evidence it was first published before 1923 (based mainly on the NPG's estimated date of the work).
Title: John Martyn title QS:P1476,en:"John Martyn " label QS:Len,"John Martyn "
Credit: one or more third parties have made copyright claims against Wikimedia Commons in relation to the work from which this is sourced or a purely mechanical reproduction thereof. This may be due to recognition of the "sweat of the brow" doctrine, allowing works to be eligible for protection through skill and labour, and not purely by originality as is the case in the United States (where this website is hosted). These claims may or may not be valid in all jurisdictions. As such, use of this image in the jurisdiction of the claimant or other countries may be regarded as copyright infringement. Please see Commons:When to use the PD-Art tag for more information.
Author: anonymous 
Usage Terms: Public domain
License: Public domain
Attribution Required?: No