 His home was frequently visited by various activists and researchers, including foreigners Jan Niecisław Baudouin de Courtenay, J. J. Mikkola and his wife Maila Talvio, , Eduards Volters, , Åge Meyer Benedictsen.His Lithuanian visitors included Antanas Baranauskas, Jonas Jablonskis, Petras Avižonis, Juozas Tumas-Vaižgantas, Gabrielė Petkevičaitė-Bitė Povilas Višinskis.Kriaučiūnas was particularly close with Vincas Kudirka.