Mysterious Crosses or Emblems With Polish Roots


I belong to a beautiful little country church named after the Polish Bishop and Martyr, St. Stanislaus of Krakow.  It is full of colorful and meaningful windows, murals, and statues.  I've been working on a book/binder to explain much of the artwork, in hopes to share what each piece of art symbolizes.  Funny, out of all the pieces of inspiring art, these two small crosses have stumped me the most!  I have been on a long, but interesting journey of e-mails and phone calls trying to find out their significance! 

 Boat With A Cross For A Mast - Or it might be a Crescent Cross, or something else altogether.  At any rate, I learned from the priest who commissioned the murals of the church to be painted that this cross/symbol is the emblem for bishops of  Krakow in Poland. 

Cross-And-A-Half - This cross, or emblem, goes back in Polish history to a time when three pagan Prussians converted to Catholicism, and the Polish king granted them this design to be a part of their coat of arms.  Because St. Stanislaus was a descendant of these pagans-turned-Christian, it became his family's coat of arms as well.  I am not sure what the extra beam jutting out to the right is ... maybe the foot-rest for Jesus?

Prus Coat of Arms
One very nice person from Poland sent me this photo of St. Stanislaus, with images of the two crosses appearing at the bottom.