I am curious if anyone knows of interesting/less well known sources of funding for an American student to study at Cambridge for a Part III. I am currently a math and physics junior who fell in love with the place on a recent visit and, from what i can tell, the main difficulty people have with going is getting funding. I have found one place that claims that NSF can fund you (link), does anyone else know about this/can confirm this? I know of the Churchill fellowship, the Gates Fellowship, the Marshall Scholarship, and the Fulbright Award. Obviously though, all these are fairly to very prestigious, and would love to know of any other options.