L. M. Gensman died in 1954.
L. M. Gensman was born in 1878.
M. L. Andreasen died in 1962.
L. M. Thapar died in 2007.
L. M. Thompson died in 2004.
M. L. Jaisimha died in 1999.
L. M. Shaw died on 1932-03-28.
L. M. R. Rutten died in 1946.
L. M. Wells died on 1923-01-01.
E. M. L. Endeley died in 1998.
M. L. Vasanthakumari died on 1990-10-31.
None of the two. It is not typical at all and it doesn't mean anything in German, although it might originate from it. The ending -man (-mann) is very German. Gensman? Dutch?
Robert L. M. Underhill died on 1983-05-11.