Hello,
Just to show my interest: I was somewhat surprised to learn of an Egbers family in Soest.My family comes from the north-western part of the same province, Utrecht. Soest is in the north-east.
Most Egbers families come from the east of the Netherlands, the Almelo/Enschede region. A language teacher once told me that the name is probably related to the dutch word 'eiber', which means: stork. You know, the bird.
Greetings, Nico