On Archibald Montgomery, G79J 6Y2, his son, Theophilus, was listed 4 times. He went by Timothy, Tim and Tim Speed: G79J DMZ. G79J 5FN, G489 SQ5, GW74 SG5. Can this be corrected?
Because you know the ID numbers, , you can merge the records by ID.
See these related help articles for additional information
How do I merge possible duplicates in Family Tree?
How can I find a deceased person in Family Tree?
How do I decide if two records in Family Tree are about the same person?
How do I undo a merge in Family Tree?
Adding his alternate or nicknames in the Other Information can help with searches.