It's pretty easy for there to be other bloggers using the same Pseudonym as you out there, especially since many teacher bloggers use their first or last initial with Mrs. to disguise their true identity. I know we don't do it to hide of course, but for privacy issues which are so often a part of teaching in an online community.
I've been using Mrs. D or Miss D since I first started blogging about my wedding over at my other blog: And Something Pink. When I got married I changed my profile name from Miss D to Mrs. D.
I've noticed a few:
This one is a first grade teacher in Ohio, check her out!
This one is a second grade teacher, also great!
This one teaches first grade as well, I just found her a couple days ago.
On a quick internet search for more teacher Mrs. D's I found:
I'm sure there are more. If I forgot to include you, leave me a link, and I'll add you to my list.
Enjoy your hunt!