Austrian civil servant and the father of Adolf Hitler, born to a 42-year-old unmarried peasant, Maria Anna Schicklgruber, whose family had lived in the area for generations. At his baptism at the nearby village of Döllersheim, the space for his father’s name on the baptismal certificate was left blank and the priest wrote “illegitimate”.
Sometime later, Johann Georg Hiedler moved in with the Schicklgrubers; he married Maria when Alois was five. By the age of 10, Alois had been sent to live with Hiedler’s brother, Johann Nepomuk Hiedler, who owned a farm in the nearby village of Spital (part of Weitra). Alois attended elementary school and took lessons in shoe-making from a local cobbler. At the age of 13 he left the farm in Spital and went to Vienna as an apprentice cobbler, working there for about five years. In response to a recruitment drive by the Austrian government offering employment in the civil service to people from rural areas, Alois joined the frontier guards (customs service) of the Austrian Finance Ministry in 1855 at the age of 18.
As a rising young junior customs official, he used his birth name of Schicklgruber, but in mid-1876, 39 years old and well established in his career, he asked permission to use his stepfather’s family name. He appeared before the parish priest in Döllersheim and asserted that his father was Johann Georg Hiedler, who had married his mother and now wished to legitimize him. Three relatives appeared with him as witnesses, one of whom was Johann Nepomuk, Hiedler’s brother. The priest agreed to amend the birth certificate, the civil authorities automatically processed the church’s decision and Alois Schicklgruber had a new name. The official change, registered at the government office in Mistelbach in 1877 transformed him into “Alois Hitler”. It is not known who decided on the spelling of Hitler instead of Hiedler. Johann Georg’s brother was sometimes known by the surname Hüttler.
Adolf Hitler, born 20 April 1889, was his 6th child, the fourth by his third wife, Klara Pölzl. Klara’s first three children died in infancy, only Adolf and his younger sister Paula, born 21 January 1896, survived.
Alois Hitler died on 3 January 1903, probably from a pleural hemorrhage.
Link to Wikipedia biography