Hi viiga,
my mom knows of Agnes and Alec from their dad's (Robert Corrie's) other wife as my mom's mom (Mita, from second wife) used to refer to them as her sister/brother. I think my mom mentioned that she still communicates with her cousins in the Gilberts (Milne/Corrie family). I think what we really need to do here is work up a tree and get dates (years) organized. Mom was saying she gets confused because of same names being passed down to their children and children's children, i.e., agnes, alex, robert, etc. I'll try write things down next time and provide info to you. Have a good day.