This is the tombstone of Frederick A. Schumm, located in row 8 of Zion Lutheran Cemetery, Schumm, Van Wert County, Ohio. The marker is inscribed:
FREDERICK A. SON OF
L.E. & C.E. SCHUMM
MAR. 18, 1923
MAY 9, 1923
Frederick Arthur Schumm was born in Willshire 18 March 1923, according to his tombstone; born 19 March 1923, according to his death certificate.  Frederick was the son of “Louis” Fredrick and Cora Eva (Roop) Schumm.
Frederick’s parents lived on State Street in Willshire in 1920 and his father Louis was a house carpenter. 
Frederick Schumm died at home in Willshire of pyloric stenosis [a stomach-related ailment] on 9 May 1923, at the age of 1 month and 21 days. He had been under the care of the physician since 22 April. Frederick was buried on the 10th. 
Frederick Schumm had the following siblings:
Robert W. Schumm [Rev. Dr.] (1915-2003), married Delora Burk; married Frances Picknell
Elbert R. Schumm Sr (1918-1978), married Elva Jane Martin
Mary Elizabeth Schumm (1920-2016)
Herbert Ivan Schumm [Rev.] (1928-2018), married Priscilla Ruth Bonell
There is no record of Frederick’s baptism in Zion Lutheran, Schumm’s records. His death was recorded years later, in 1975 by Rev. Schuler.
On a side note, Frederick’s sister Mary Schumm was my first organ teacher. That was back in the early/mid-1960s. She also played the harp.
 “Ohio Deaths, 1908-1953, Willshire, Van Wert, Fredrick Arthur Schumm, 9 May 1923; database with images, FamilySearch.org (https://www.familysearch.org/ark:/61903/3:1:S3HY-6XSQ-LW4?i=1335&cc=1307272&personaUrl=%2Fark%3A%2F61903%2F1%3A1%3AX8TB-CBV : viewed 9 Aug 2021).
 1920 U.S. Census, Willshire, Van Wert, Ohio, ED 146, p.11A, dwelling 126, family 127, Louis F Schumm; digital image by subscription, Ancestry.com (https://www.ancestry.com/search/collections/6061/ : viewed 9 Aug 2021).
My grandfather rev Alfred Moeller was pr there in the 1940s. Do you know anything about him.
Re Dr Philip Hemke
My mom would have known him and I remember her mentioning his name, but other than that, I do not know much about him. I believe I have some photos of him with church members and/or church youth in some of my blog posts. You may find those photos interesting. Thanks for writing!