The reason for this is clear. Parents did not want their male children to have names that evoked the memory of a Jew-murdering dictator. Sometimes, an unfortunate connotation cannot be blamed on the parent. This occurs in the case of Philadelphia Phillies relief pitcher Michael Jackson. Speaking of Michael Jackson, he can be blamed as a bad parent for naming his son Prince Jackson.
Unfortunate connotations can occur in other ways as well.
A girl in the 1990's named Brandy will probably meet with wisecracks about the young female singer who removes her makeup with the help of a jackhammer and a team of miners. Before this lady who vaguely resembles a human being became well-known, girls named Brandy would likely be informed that she was a fine girl, and what a good wife she would be, but my life, my love, and my lady is the sea. And before that song became popular, she would meet with insults because she was named after an alcoholic beverage. Parents should also be aware of historical and linguistic meanings. The chairman of the I.N.C.H. indeed knows a very manly woman named Andrea, but manliness does not appeal to all women.