Albert Sleumer

Albert Sleumer (1876 - 1964) ([ˈɑɫbərt ˈslɔʏmər]), a doctor, was the second Cifal (1912–1948) of the Volapük movement. Like Johann Martin Schleyer, Sleumer was a Catholic priest.
Biography.
Sleumer began learning Volapük only in 1892—after the "classical period" of the Volapük movement, directly from Schleyer. In 1910, Schleyer named Sleumer his successor, and when he died in 1912, Sleumer became Cifal. 
In 1921, Arie de Jong proposed to Sleumer his plan for reforming the language, and when this reform was prepared in 1929, he put the whole not only to Sleumer, but also to Jacob Sprenger. Sleumer, De Jong and Sprenger were the last group who led the linguistic development of Volapük like a small school.
In 1934, Sleumer issued a decree regulating the rights and duties of Cifals; in 1948 he resigned as Cifal, appointing Jacob Sprenger his successor.
Sleumer was a famous Latinist and theologian, defending in 1906 the need for the Church censure.