Born on March 23, 1904, in Saint Paul, Minnesota, Blumenfeld received at Bachelor of Arts degree in 1925 from the University of Minnesota and a Bachelor of Laws in 1928 from Harvard Law School.

He worked in private practice in Hartford, Connecticut, from 1928 to 1961.

He was a special assistant to the United States Attorney for the District of Connecticut from 1942 to 1946.

[1] Blumenfeld was nominated by President John F. Kennedy on August 7, 1961, to the United States District Court for the District of Connecticut to a new seat authorized by 75 Stat.

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