Beam
Likely a topographic surname for someone who lived by a notable tree or boundary marker, though a few old sources also connect it with a wooden beam.
The #2,584 most common surname in the United States (2010 Census) — about 1 in every 22,097 Americans shares it.
Etymology
The surname Beam is usually explained as a topographic name from Old English words related to a tree or beam of wood. In medieval English place-name usage, it could mean someone living 'at the beam' or by a prominent tree used as a landmark. Some older writers also associated it with a wooden beam in the broader sense, but the tree/landmark explanation is the one most often given for the surname.
History
The name is recorded in medieval English forms such as de Beame / Atebeame, showing it was already established as a local surname by the 13th century. Later spellings include Beams and Beames, which fit the same place-based origin. The surname survives in England and is also found in the United States.
Origin
Regions
Variant spellings
Fun fact
One 19th-century surname dictionary glossed Beam as a name taken from residence 'at the beam,' meaning beside a prominent tree or landmark.
From the historical record
“(Eng.) the A.-Sax. Sigebeorn = Victori- ous Warrior [O.E. sige, victory + beam, warrior] The A. - Saxon name was used as an equivalent of the Norse name.”
— Surnames of the United Kingdom: a concise etymological dictionary (2 vols in 1)