It’s another example of why genuine historical facts tend to be far more interesting than how they’re eventually not remembered, 155 years later.
The Original Mother’s Day Proclamation: A Mother’s Day Reading (Plough)
… In the United States, the origins of the official holiday go back to 1870, when Julia Ward Howe – an abolitionist best remembered as the poet who wrote “Battle Hymn of the Republic” – worked to establish a Mother’s Peace Day. Howe dedicated the celebration to the eradication of war, and organized festivities in Boston for years.