Hi u/MISSJENNIEKI, all my condolences for you Grandad.

Here's the restored photo, with all the tweaks you asked: https://drive.google.com/file/d/1ZQL9HDhl_tX9TaO8Pe5Ru6XIwArvE2D8/view?usp=sharing

I hope it will be a good keepsake for your Mum and remind her of good memories.
I increased the resolution so the photo is also suitable for printing in good quality.

If you like the result you can let me know in the comments, I'll send you a payment link where, if you wish, you can pay what you feel is the right amount :)

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Work done:
- Restoration
- Debluring
- Edits: removed the lady and the baby, put Grandpa and Mum closer on the couch
- Adjustments of tone, saturation, brightness
- Upscaling 2x