Image: John Churchill, 1st Duke of Marlborough; John Armstrong from NPG

Description: John Churchill, 1st Duke of Marlborough; John Armstrong, 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 are listed as "unknown author" by the NPG, who is diligent in researching authors, and was donated to the NPG before 1939 according to their website.
Title: John Churchill, 1st Duke of Marlborough; John Armstronglabel QS:Len,"John Churchill, 1st Duke of Marlborough; John Armstrong" label QS:Lde,"John Churchill, 1. Herzog von Marlborough; John Armstrong"
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