Marc Andreessen — Birth Year: 1971

Note: The source provides two different birth dates for Marc Andreessen. One source (Encyclopædia Britannica Online) states 9 July 1971, which confirms the claimed birth year of 1971. However, another authoritative source (Library of Congress Authorities) states 9 September 1971, also confirming 1971 as the birth year. While the year is confirmed, there is a discrepancy in the month/day (July vs. September), indicating conflicting information in the source itself. The claim only specifies the birth year (1971), which is confirmed by both dates listed, so the claim is technically confirmed, though the source reveals underlying uncertainty about the exact date.