No founder, organization or establishing record has surfaced for the March 3 observance, unlike the separate National Robin Day that the UK charity SongBird Survival runs on 21 December. The March 3 day's earliest dated trace is an archived holiday listing carrying that date, captured in August 2022, which fixes a floor for the listing rather than a founding.
The American century
Robin reached American records early and quietly. The Social Security files carry it from 1881, when five boys were given it. The first six girls appear in 1904.
Then the name took off. In 1961 it went to 15,653 American girls, a figure no other year matches.
Two well known bearers belong to that stretch of the century. A. A. Milne named the Winnie-the-Pooh character after his son Christopher Robin Milne, who was born in 1920. The actor and comedian Robin Williams was born in 1951 and died in 2014.


