One of you had the birthdate as 2/11/1921 and one of you had it as 3/11/1921. I picked one date to clean up the conflict, but if the month difference bothers you, check your records to confirm the correct date.
5/19/2011 at 7:34 AM
The death date is 11th March 1921 (from the death notices attached to his profile).
Wolf-Erich: did you have a different death date from the IKG registers? If you found his death entry, do they give place of birth & any parents names ?