Hello Mawmaw4boys,
Thanks for posting in the Apple Support Communities. We're happy to look into this with you. If you haven't done so yet, review the article below to help with accidentally deleted Contact. This may help you to recover them.
If you accidentally deleted your calendars, bookmarks, or contacts from iCloud
Although we understand wanting to use an adults account for a child, it's never recommended to share an Apple ID, since all parties using it will have access to everything stored on the account. Even though your grandson is young, you can create an Apple ID for him. Just be sure to provide the correct date of birth so that a child account is created.
You'll find full details about this type of account here: Create an Apple ID for your child.
How to create an Apple ID for your child
Children under 13 can't create an Apple ID on their own. (This age varies by region.) But if you're the family organizer or a guardian, you can create an Apple ID for your child.
On your iPhone, iPad, or iPod touch
To verify that you're an adult, you need a credit card. On your iPhone, you can also use a driver's license or state ID added to Wallet where available.
In iOS 16 or iPadOS 16 or later
1. Go to Settings > Family.
2. Tap the Add Member button 
.
3. Tap Create Child Account, then tap Continue.
4. Enter the child's name and birth date. Be sure to enter the correct birth date — you can't change it later.
5. Follow the onscreen instructions to finish setting up the account. For your child's Apple ID, you can use their email address, the suggested @icloud.com address, or their Game Center nickname.
In iOS 15 or iPadOS 15 or earlier
1. Go to Settings.
2. Tap your name, then tap Family Sharing.
3. Tap Add Member.
4. Tap Create an Account for a Child, then tap Continue.
Follow the onscreen instructions to finish setting up the account. You can use the child's email address for their Apple ID, or their Game Center nickname. Be sure to enter the correct birth date — you can't change it later.
If you're not familiar with Family Sharing, as it is required to set up a child account, this article will provide you with a full explanation: Family Sharing
Best regards.
