Robert M. Green has written: 'A branch from the Green tree'
Robert M. Knapp was born in 1831.
Robert M. Hensel was born in 1969.
Robert M. Salter was born in 1920.
Robert M. Ball was born in 1914.
Robert M. Patton was born in 1809.
Robert M. Chanock was born in 1924.
Robert M. Barr was born in 1918.
Robert M. Hall was born in 1909.
Robert M. Gray was born in 1943.
Robert M. Berne was born in 1918.
Robert M. Boche was born in 1921.