This pattern is very different from what we would think of as a Cathedral Window block today. I'm guessing that it was not a commonly used pattern since I can't find any info. on it.
I did not try to make this block for my sampler quilt because I didn't think it was suitable for a 6" block.
The Cathedral Window block can be found in BlockBase as #1953.
This block reminds me of cutting out paper snowflakes as a kid. You know, where you fold the paper and cut out shapes? Anyway, I think it would be nice made as a big block. In a 6" block, the large squares are only about 1 3/8"!
Tomorrow-Star and Crescent