A traditional 3-letter monogram has the initial of the individual's last
name (surname) set larger, or with some special treatment in the center,
while the first name initial appears to the left of it and the middle name
initial appears to the right of it.
Married or engaged couples may use two-letter monograms of their entwined
initials, for example on
wedding invitations. Married couples may also create three-letter
monograms incorporating the initial of their shared surname. For example,
the monogram MJA might
be used for Michael and Alice Jones.