Vailokaitis is a Lithuanian surname of uncertain origin, possibly from Slavicism vailokas ("felt"; from ) + patronymic suffix -aitis.Vailokaitis, Lithuanian surname database; entries based on Lietuvių pavardžių žodynas, (ats. red. A. Vanagas, autoriai A. Vanagas, V. Maciejauskienė, M. Razmukaitė). Vilnius: Mokslas, 1985, T. 1; 1989, T. 2. Aleksandra Vailokaitienė (1895 – 1957), Lithuanian photographer Jonas Vailokaitis (1886 – 1944), Lithuanian banker and industrialist Juozas Vailokaitis (1880–1955), Lithuanian political and public figure, Roman Catholic priest, publisher, businessman, banker

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