I found the block in Jinny Beyer’s Quilter’s Album of Patchwork Patterns (2009). It is called Papa’s Delight and was designed by Clara Stone and published is her Practical Needlework pamphlet in 1906. You can look at all the patterns in this pamphlet here:
http://www.antiquepatternlibrary.org...atterns.nw.pdf
The one difference between your quilt and the pieces in Papa’s Delight is that your quilt has a larger center square.