Born on 17 March 1910 in Amsterdam, the son of Antonius Paulus Vittali and Gerarda Johanna Bakker. Leendert married Antje de Made and they had three children. Leendert worked as a hairdresser before his early death on Christmas day 1952, aged 42. Antje died in Hoorn in 1997, aged eighty.
De courant Het nieuws van den dag: Leonardus and Antje's first child. Originally, a mistake was made, naming the son as "Theo".
De courant Het nieuws van den dag: 24 November 1944 (a rectification with correct name)