Thank you for your question. I didn't realize that pillows came in
this size before you asked.
I first came across Kreiss where they say:
"Q. What are your pillowcase sizes?
A. Pillowcase type Dimensions
King 21" x 40"
Queen 21" x 34"
Standard 21" x 30"
As I might have thought. This seems to be the standard rectangular
pillow I am familiar with. They go on to talk about decorative
"...Q. What are the different decorative size pillows you carry?
A. The pillow sizes are as follows:
King 30" x 30"
Queen 26" x 26"
Standard 20" x 20"
12" x 16"
This was the first mention I have seen of a 30 x 30 pillow, but
decorative as you can see. BUT, they also mention the following as
regards standard pillow cases:
"All Kreiss pillowcases are finished with a 4" hem. Hem stitching is
available on all of our pillowcases upon request. We can also custom
size your specific needs at no extra cost; a Kreiss exclusive...."
So, there you will find an option for your pillow cases.
Elderidge Textile lits a "European Pillow Sham" at 30 x 30:
02222168 European Pillow Sham 30" x 30" $ 32.50
Now, this provided a clue and I further searched for "European
pillowcase". I found that 76cm x 76cm is 30" x 30" and somewhat a
standard size, it seems, though 65cm x 65cm (26" x 26") seems much
more common. Note the following page on Indian fabric bedding:
European Pillowcase (flange edge) 76 x 76cm
These can be ordered online if they suit your taste.
I was able to locate numerous sites that sell European Pillowcases at
65x65 cm, but precious few for what appears to be oversized 76x76 cm.
Touch of Europe began to confirm that shams are pillowcases and notes:
Q: What is a Euro Sham?
A: It's the size pillowcase generally used in Europe. The shams can
vary between 26 and 31 inches and are usually square. Ours are most
commonly around 30-31 inches square, and if they are not, we will
always give you the measurements. They usually close with buttons on
the back and are always either cotton or linen or a linen/cotton mix.
We don't have synthetics.
You will find almost 100 styles at their online store under "Euro sham":
Though I continued to search, Touch of Europe seems to have the most
extensive collection of shams in your required size. They are in
Lawrenceville, Georgia and can be ordered at their site. Hopefully,
you will find a pattern or style to your liking or you can check with
Kreiss to see what they can provide in this custom size from their
"30 x 30" +pillowcase
european pillowcase +76
I trust my research has provided you with possibilties for your
pillowcases. If a link above should fail to work or anything require
further explanation or research, please do post a Request for
Clarification prior to rating the answer and closing the question and
I will be pleased to assist further.