Max Rossvally blowing the shofar
(1879, Library of Congress)
He appeared as a pious man even though, judging by the photos, he didn't seem to know laws of tefillin (phylacteries) or lulav (a grouping of flora, including a palm branch, used in Sukkot prayers.)
Who was Rossvally? A Jewish man originally from Germany named Mordechai Rosenthal, a Civil War veteran who claimed he was a surgeon, a convict, and a evangelical convert to Christianity.
Here are the poster and his pictures with a lulav and tfillin:
Rossvally's gallery of pictures
Rossvally and misplaced tfillin
Rossvally with a few extra branches and misplaced tfillin, usually not worn on Sukkot (Tabernacles)
Here's what we know about Rossvally:
(From a description of Jewish converts to Christianity and Rossvally in "United States Jewry, 1776-1985," by Jacob Rader Marcus)
A description of a meeting of an American anti-Semitic group attended by Rossvally who converted while serving a sentence in prison (American Jewish Archives, 1964)
Today, shofar-blowers are known for their piety and observance of Jewish commandments.
Yemenite Jew blowing the shofar (circa 1935, all photographs are from the Library of Congress archives)
Ashkenazi Jew in Jerusalem blowing the shofar to announce the Sabbath
Yemenite Rabbi Avram, donning tfillin for his daily prayers, blowing the shofar
Man blowing the shofar in Mandelkern, NY, 1901