Ewart was born in Australia in 1876 and worked as a Baptist bush missionary until he immigrated to Weyburn, Saskatchewan, Canada in 1903 where he pastored a Baptist church and married Violet May. With declining health Ewart was furloughed in 1908 during which he attended a Pentecostal camp meeting in Portland, Oregon where he converted to Pentecostalism which resulted in his dismissal from the Baptist church he was pastoring. In 1911 Ewart moved to Los Angeles and became assistant pastor and later pastor of William Durham’s Seventh Street Mission after Durham's death. In 1913 Ewart attended the World Wide Apostolic Faith Camp Meeting where Ewart heard R.E. McAlister give the initial sermon on Jesus' Name doctrine. During and after the meeting Ewart, McAlister and later Glenn Cook met and refined the new Jesus' Name doctrine. By 1914 Ewart and Cook started preaching Jesus' Name doctrine and re-baptized each other in the name of Jesus. As well as preaching Ewart created Meat in Due Season a periodical that advocated for the Jesus' Name doctrine and had a global reach persuading many Pentecostals including G.T Haywood, Frank Small, Elmer K. Fisher, E.N. Bell and L.C. Hall. Nearing the end of his life Ewart wrote The Phenomenon of Pentecost a narrative history of the Pentecostal movement that is still recommended reading by the UPCI. On August 13, 1947 Ewart died of cancer.
- "Rev Francis John "Frank" Ewart". Find a Grave. Retrieved 15 May 2011.
- Shaw, Matthew. "Frank J. Ewart, Pentecostal Pioneer". The Old Landmark. Retrieved 15 May 2011.
- Bernard, David (1999). A History of Christian Doctrine 1900-2000 Volume 3. Hazelwood, MO USA: Word Aflame Press. ISBN 1-56722-221-8.
- Ewart, Frank (1948 Revised 2000). The Phenomenon of Pentecost. Hazelwood, MO USA: Word Aflame Press. ISBN 0-932581-91-9.