Good luck, I lost my 15yo pug Casey Jones a few years ago. I still had my GSD and she got to play with my ex wifes puppy a lot when I was traveling for work so that helped her adjust to being in a single dog household. Since I was traveling it was not fair to get another puppy that I could not spend time training.
Then came 2020 and my work travel ground to a halt in March like everyone. Delilah wasn't getting the playing time as often and seemed down. Coupled with my daughter being a senior in HS I figured it was time.
Enter Tenny (short for Tennessee Jed) our new pug who is now almost 6 months old. He has been a challenge as all puppies are but I wouldn't change a thing. Delilah and him play constantly and for a 12yo GSD that is a good thing.
And yes, there is a common theme on how we name them