wikipedia.org

X0YKR TIL about Morris Abraham Cohen (born Moszek Abram Miączyn; 3 August 1887 – 7 September 1970), better known as Two-Gun Cohen, a Polish-born British and Canadian adventurer of Jewish origin who became aide-de-camp to Sun Yat-sen and a major-general in the Chinese National Revolutionary Army.
OGXN1 TIL Sarah Childress Polk got married at 21, became First Lady at 41, and after James K Polk died 103 days after leaving office, lived another 42 years, the longest widowhood of any First Lady.
R5PY1 TIL that in the 1900 Summer Olympics, the Dutch team recruited a young boy from the crowd to be their coxswain. He ran off after the team won and his identity remains unknown.