Good news! Doug Lockwood added the Find A Grave sources and some other sources to Christopher and Margaret Carroll's profile. If you are unfamiliar with sources, please review the messages that are posted to your profile by WikiTree greeters when you first joined. There should be links to useful orientation information.
If the sources you know about are posted to the profiles, others will know what you already have. (For example Betty Fox would have seen the Find A Grave information posted to Christopher Carroll's profile.)
Please get familiar with the sources Doug posted and here; https://www.wikitree.com/wiki/Help:Sources
It will help immensely if you post any other sources you have. Including specific information your aunt and uncle gave you, along with their names and relationship.
Take your time because you are learning valuable skills in sourcing.