Mildred Hill who composed the melody for HAPPY BIRTHDAY TO YOU was born on June 27, 1859, and died on June 5, 1916.

Mildred J. Hill from Wikipedia    https://en.wikipedia.org/wiki/Mildred_J._Hill
”Happy Birthday to You” from Wikipedia    https://en.wikipedia.org/wiki/Happy_Birthday_to_You
"Copyright and the World's Most Popular Song". Journal of the Copyright Society of the U.S.A. Legal Studies Research Paper No. 392.     https://scholarship.law.gwu.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=1303&context=faculty_publications
Many different recordings of "Happy Birthday to You" on YouTube    https://www.youtube.com/results?sp=mAEB&search_query=HAPPY+BIRTHDAY+TO+YOU+
Marilyn Monroe singing Happy Birthday Mr President.     https://www.youtube.com/watch?v=Y74oWon5VTo