A coat of arms is a family’s identity in picture form, so it is read as lineage, honour and the expectations that come with a name. It can also reflect pride in where you come from.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.