Pronounced zee-GLIND-uh. I'm not quite sure which syllable the emphasis falls on, but that is the correct pronunciation.
― Anonymous User 9/27/2008
2
This name, in modern German, would probably sound simething like [zi:glində], though, were someone to use this name in English, it would probably be pronounced [siglɪnd], as this appears to be its pronunciation at first glance.