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In page Ferdinand Anton Ernst Porsche:

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Ferry Porsche's mother was Aloisia Johanna Kaes. He had an older sister, Louise Piëch, who was five years his senior. He was baptized Ferdinand Anton Ernst Porsche, with the name Ferdinand after his father, the name Anton after his grandfather, and the name Ernst after his uncle on his mother's side. Early in his childhood he picked up the nickname "Ferry" rather than the usual nickname "Ferdy", as Ferdy reminded his parents too much of a typical coachman nickname — a profession that, coincidentally, was made obsolete by the family's work.