Bryan Henderson is an American Wikipedia editor. He is known for changing "comprised of" on the English Wikipedia. On Wikipedia, his user name is "Giraffedata.” In February 2015, his edits for changing "comprised of" became national news in the US. Most media coverage liked his edits as a "unique effort for correctness,” while others criticized it as being wrong. By August 2010, Henderson removed all – around 18,000 – occurrences of the term. He continues to monitor new content for instances of "comprised of" and removes them, except when occurring within a quotation. As per Wikipedia logs, he has made over 47,000 edits to the English Wikipedia.
Bryan's older brother, Robin Henderson, also edits Wikipedia. Robin changes instances of "based around.” He usually changes them to "based on."
References
Further reading
Other websites
Bryan Henderson's personal page on English Wikipedia explaining the reasons and motivations for his work