FWIW in 1947 there was one Ruda registered in Netherlands in the province of Gelderland (adjoins the German border). In 2007 there were <5 registered. https://www.cbgfamilienamen.nl/nfb/detail_naam.php?nfd_naam=Ruda&gba_naam=ruda&info=kaart1947&operator=eq&taal=#kaartweergave --
Pieter Hoekstra Moss / Moses, De Costa - London and Brighton Barnett, Da Costa, Lazarus, Joseph, Judah, Solomon - London
