The reason why the last name traditionally goes in the middle is because the last name is most important and should stand out! Example: Mary Rachel American, whose monogram would look like: Married Ladies: ... Generally when a woman is married, the middle name leaves her monogram and is replaced by her maiden name.
What order does a monogram go in?
Place the initials in order (first, middle, last) at the same size for an individual monogram.
How are letters arranged in a monogram?
If all the letters are the same size (also known as block), initials are ordered like your name: first, middle and last. If the monogram features a larger center initial, the ordering is always first name, last name, and middle name.