I don't see any family connection yet... but the thing is that JILEK is very very common name in the Czech Republic and I haven't followed the Jilek's part of the family very closely so far. But the location is close to the one my family lived... so ther could be something :) If you send me more info about your grandfather I can check his birth record next time I go to the archive... but it will be at the end of June the earlist...