>The family members included:

> Peter Strelzyk, aged 37

> Doris Strelzyk

> Frank Strelzyk, aged 15

> Andreas Strelzyk, aged 11

> Günter Wetzel, aged 24

> Petra Wetzel

> Peter Wetzel, aged 5

> Andreas Wetzel, aged 2

Was/is it common practice to omit the ages of adult women in Germany?

Not as of my knowledge. Coincidence I suppose, or desire by them to keep it private.