Since I've never owned an iPad, and the texts were rather confusing with respect to the testimony surrounding the backup files found on DM's computer, I felt the need to do a little research... Based on what I've read on the Apple Support website, it seems to me that SL's iPad was most likely renamed "Mark's iPad" on the device itself PRIOR to it's first backup to the computer on July 4. (I assume
immediately before.) For the first backup of the device to a new computer, the serial number would not be recognized, so I believe you'd be forced to go through the steps of setting it up to back up to THAT computer. Apple support indicates that you should not edit, move, rename, etc. the backup files, because those actions could ruin the files. From what I understand (though it's still a bit unclear to me), I would think that if the device itself hadn't been renamed prior to this first backup, there would be a separate backup file on the computer's hard drive with the original device name, and then a new file altogether with the new device name if it were renamed subsequent to the next backup. Any Apple experts here to help confirm or correct this?
https://support.apple.com/en-ca/ht204215