Looking for info about 3rd brother of "Harder" bros --- JG. 53

Greetings everyone...

this site says they were 3 brothers:

http://www.luftwaffe39-45.historia.nom.br/ases/harder.htm

1- Hauptmann Haro Harder ; KIA in Battle of Britania - 22 Victories .

2- Major Jurgen Harder ; KIA in 17/02/1945 - 64 Victories .

Who is third Bro ???

i didnt find any thing ...

was he a pilot too ???

also looking for Details of their Victories and if possible, their death cards.

thanks in advance.

 

I'm not sure about a third brother in the Luftwaffe. I have Jürgen born in Swinmünde 1918 , and Harro was born in Freiburg 1912. Jürgen was also called Hans Joachim so there could be a confusion.

http://www.luftwaffe.cz/harderharro.html
http://forum.axishistory.com/viewtopic.php?t=34459