Thanks Darren because I learned so much from your post. How interesting to learn about Saint Joseph of Calasanz and this religious order that was founded in Rome. The members became known as the Piarists and educated poor children. I love reading about all these good works that went on…thank you again for looking that up.
In Chambers’s Encyclopaedia: Dictionary of Universal Knowledge for the People, by William Geddie, Vol. 7, London [etc.], W. and R. Chambers, 1874, page 524, it does explain this:
“In 1621, Gregory XV. approved the congregation as a religious order. The constitution of the order was several times modified by successive popes. . . . Its field of operations has, of course, been confined to European countries; and at present it can reckon communities in Italy, Austria, Spain, Hungary, and Poland.”
The United States Army of the South made its way into what is now, St. Lucie County, in 1838.
Dr. Jacob R. Motte was a military surgeon with the Regiment in Florida. One can read his old writings. The “OMD” would likely be from the mid-nineteenth century (not too modern).