It is very close to the Czech language (v roce 1855), which tranlates to "in the year 1855". Is it possible that roco is actually roce? It's hard to tell from the picture. 23 brezna 1925 would be "March 23, 1925". I wish I could read the inscription at the bottom. I'm sure you were hoping for a birth month, but I'm afraid it isn't on this stone. Hope this helps in some way!