Her parents, Harry and Ella St. John, had been missionaries to South America for two years. Patricia was born, the third of five children, just after they arrived back in England.

From her memories of a year lived in alpine Switzerland she wrote her second book, Treasures of the Snow.

After finishing high school she became a nurse during World War II, and after the War ended was a house mother at her aunt's boarding school for a couple of years before she joined her brother, Farnham, in Tangiers, Morocco, where he was medical director of a Missions hospital.

Biographical

• Man of Two Worlds: The Life of Ken Moynagh, Henry E Walter Ltd (1976) (bio of Ken Moynagh)
• R Hudson Pope: A Biography, Patricia M St John, Scripture Union, 1967 (bio of R. Hudson Pope)
• Until the Day Breaks: The Life and Work of Lilias Trotter, Pioneer Missionary to Muslim North Africa, OM Publishing, (1990) (bio of Lilias Trotter)
• Harold St. John, Loizeaux Brothers; 2d ed edition (1962) (bio of her father, Harold "Harry" St. John)
• Patricia St. John Tells Her Own Story, OM Publishing (1995) (Also published as "An Ordinary Woman's Extraordinary Faith") (autobiography)

Fictional

• Treasures of the Snow, Scripture Union Publishing (Sep 1980)
• The Tanglewood’s Secret, Scripture Union (1967)
• Rainbow Garden, Moody Press (Jul 1995)
• The Secret at Pheasant Cottage, Moody Press (Jul 1995)
• Star Of Light, Moody Press (Jul 1995)
• Where The River Begins, Victor Books (Mar 1987)
• Three Go Searching, Moody Press,(Jul 1995)
• The Secret Of The Fourth Candle, Moody Press (June 1981)
• Stories to Share, Shaw (March 7, 2000)
• Nothing Else Matters, Scripture Union (May 2007) (also published as: If You Love Me: A Story of Forgiveness)
• The Runaway, Moody Publishers (February 8, 1985) (Also published as: The Victor)
• I Needed A Neighbor, Scripture Union Publishing (Sep 1987) (Also published as: A Courageous Journey)
• Twice Freed, Moody Publishers (1 Jan 1987)
• The Secret Boat, Marshall Pickering (Nov 1982)

Misc

• Verses' London, CSSM, 1953
• Breath of Life: The Story of the Ruanda Mission', London: Norfolk Press, 1971
• Would You Believe It? - You Can Grow to Know God', Marshall Pickering (Aug 1983)
• Prayer Is An Adventure', Christian Focus Publications (March 2004)
• Missing the Way: They Could Not Enter In (How Israel Missed God's Rest)', Harvey Christian Publishers (1999)
• A Missionary Muses On The Creed', Pickering And Inglis (1966) (recently published as:Life Everlasting)

Patricia St. JohnPatricia St. JohnPatricia Saint-John