Welcome Ian, nice to meet you, sorry to hear about your loss, it always leaves a huge void, we lost our last girl to heart failure on Jan 17th, we have her ashes on the fireplace next to where she used to lay, along with her favourite toy, she was 13 and our last rescue girlie.
The house was very empty, and we didnt know what to do with ourselves, so we took on another rescue about a month ago, and although she will never replace Skye, all our dogs are different, and we had a space to fill, so why not fill it with a gentle soft creature who needs a loving home.
Hope you manage to find a GSD that likes cats, a lot of the rescues do, some of them have probably even been brought up with cats, good luck
