Namesakes
Ludvig Holstein-Holsteinborg
(m) 1815-1892 
Danish Prime Ministers 1870-1874
Karl IV
(a.k.a. Ludvig) (m) 1826-1872
Norwegian Kings and Queens 1859-1872
Swedish Kings and Queens (Karl XV) 1859-1872
Ludvig Holstein-Ledreborg
(m) 1839-1912
Danish Prime Ministers 1909
Ernst Schultz
(a.k.a. Ludvig) (m) 1879-1906
Olympic Medalists 1900 400 m (bronze)
Ludvig Dam
(m) 1884-1972
Olympic Medalists 1908 swimming - 100 m backstroke (silver)