He is the brother of Rudolf Diesel. Rudolf Diesel is known for inventing the diesel engine.
Theodor is right. you have it
Theodor Engel has written: 'Dr. Theodor Engel'
Theodor Larzon's birth name is Alve Theodor Larzon.
Theodor Storm's birth name is Hans Theodor Woldsen Storm.
Theodor Grieg's birth name is Theodor Maria Ignaz Grieg.
Theodor Seuss Geisel is "Dr. Seuss" real name.
Vlad Theodor Cacinschi's birth name is Vlad-Theodor Cacinschi.
Theodor Haecker was born in 1879.
Theodor Christensen's birth name is Chistensen, Christian Johannes Theodor Gleerup.
Theodor Morell's birth name is Theodor Gilbert Morell.
Theodor Kaes died in 1913.
Theodor Thierfelder was born in 1824.