Week 21 – Challenge 2 – Sobriquet
Challenge page : http://www.ancientsocieties.com/sobriquet/
There is no Challenge text.
The drawings look like military insignia.
After searching in Google Images (I used the keywords circle, military, grades), we can find Indian Navy (http://www.ssbcrack.com/2013/08/ranks-and-insignia-of-indian-army-navy-airforce.html or Canadian Army (http://en.wikipedia.org/wiki/Canadian_Forces_ranks_and_insignia) ranks. The drawings are Commodore ranks.
Using the Challenge name : Sobriquet and Commodore, we can find a Wikipedia page : http://en.wikipedia.org/wiki/Cornelius_Vanderbilt
The solution is Vanderbilt