Twelve Days of Xmas Trivia

[Eva Elisabeth]

   
Twelve Drummers Drumming -Twelve points of belief in the Apostles' Creed

Welcome to the last day of 12 Days trivia, time to take the tree down (and for me to pack).

Today is Heilige Drei Könige = Epiphany = Three Kings' Day, which celebrates the arrival of the Three Magi in Bethlehem, and marks the end of the 12 days of Christmas (hence time to take tree down). It is a public holiday in some German federal states and Austria. Today, groups of children, Sternsinger (starsingers), dressed as the magi (wise men), go singing door-to-door and 'chalk the doors as a way of blessing the house, writing 20*C+M+B+18 (this season), the numbers represent the year. CMB actually stands for "Christus mansionem benedicat" ("God protect this house"; most of my life I thought it stood for the magi's names - Caspar, Melchior and Balthasar...) 
   
So may your house be protected in 2018, too!
I have three questions left, depending on how fast you guess and how busy my remaining day and packing will turn out I may post them all - I'm afraid from tomorrow on with new tests/exams ahead I will lack the time for such "luxury".

Well then - who is she supposed to be?