1) David hilbert 2) Dutch boy name 3) German surname 4) Mathematician 
[crater] Hilbert is a lunar crater that is located on the far side of the Moon, just past the southeast limb. It lies just beyond the region of the surface that is occasionally brought into view due to libration, and so this feature cannot be observed directly from the Earth. The crater is attached to the southeast rim of the walled plain P...[name] Hilbert is both a Germanic masculine given name and surname. Notable people with the name include: Given name: Surname: ...
The USS Hilbert was an American Bostwick Class escort destroyer of 1240 tons displacement launched in 1943. The USS Hilbert had a top speed of 19 knots and carried a complement of 220. She was armed with three 3 inch dual-purpose guns; two 40 mm anti-aircraft guns; four 20 mm anti-aircraft guns; depth charge throwers and three 21 inch torpedo tubes...
[n] - German mathematician (1862-1943)
1862–1943, German mathematician.