Didn’t know about Barclays! Thank you for educating me.

I’m afraid not. You can have Google Wallet installed but you can’t have bank cards on it on GrapheneOS.

Edit: this link for more context

I loved it too until I forgot my wallet one day. It’s the one thing I had to go back to stock Android for because I forget everything but my phone constantly.

And check your local inheritance laws. Some places will take pre-death gifts into account depending on how long the time between gift and death is. The UK, as an example, looks at gifts made up to 7 years before a person’s death. It’s messed up.