Adam Last Name: Meaning and Heraldic Roots
Adam is best understood together with Adams: both are English spellings of one family name.
Adam drops the “s” of Adams, a shortening that clerks often made.
A coat of arms belongs to a particular family line rather than to everyone named Adam, so the heraldry linked to Adams is a starting point, not an automatic right. Research your Adam family history with a full surname report and painted coat of arms.