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Meet the Teachers

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Mary Lee Barron PhD, RN, FNP-BC (R), MMCP

St. Margaret Mary Alacoque Parish, Oakville, MO


Hello! I am Mary Lee Barron, a wife and mother of 3 children. I served in the US Naval Reserve for a number of years. However, most of my nursing career has been spent in Women's Health both as an RN and as a FNP, then later as a teacher of nurses and nurse practitioners (Saint Louis University and SIUE). I started teaching NFP in 1998 and brought Marquette Method to St. Louis in 2002.   Using NFP has been a gift to me in my marriage and professionally. I found that the NFP charts were a really authentic way to take care of women and couples. Marquette Method, in particular, has been a joy to teach and provides the most variety of ways to help couples work with their gift of fertility!

Emily Grimm BSN, RN (on leave of absence)  

Incarnate Word Parish, Chesterfield, MO

On Leave of Absence

Hello, I’m Emily Grimm. I received my Bachelors degree in nursing from Rockhurst University in Kansas City MO. I live in St. Louis with my husband and two children. I work full time as a school nurse at Cor Jesu Academy, my alma mater. It was at Cor Jesu Academy that I first learned about Natural Family Planning.  A speaker told us how you give of yourself totally, faithfully, and fruitfully to your spouse through Natural Family Planning, just as Jesus did when He died on the cross for us. This changed my world and I knew I wanted to incorporate this in my marriage. My husband and I learned the Marquette Method during our marriage preparation and started practicing it after the birth of our son.  I teach the Marquette Method because I love women’s health. I believe in fertility health and that nothing harmful should be put into our bodies. God created our bodies perfectly and we can use the beauty of our fertility through Natural Family Planning. I love meeting new couples and guiding them through their journey with NFP, both the highs and the lows.

Hannah O'Rourke, PT, DPT, MMCP

Mary, Queen of Peace, Webster Groves, MO


Hi everyone! I am Hannah O'Rourke. I live in St. Louis with my husband. We are parishioners at Mary Queen of Peace. My background in health care is as a physical therapist. I first learned about NFP in college and began practicing Marquette Method in preparation for marriage. I enjoyed learning about our fertility as a couple and the beauty of NFP so much that I decided to become an instructor. I am passionate about sharing this important information with couples and helping them learn and understand their fertility. I look forward to meeting you!

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