Roop
A surname with multiple possible roots, including a patronymic from Robert and a Norman-French form linked to de Rupe/“of the rock.”
The #7,926 most common surname in the United States (2010 Census) — about 1 in every 73,951 Americans shares it.
Etymology
The surname Roop is treated in old surname dictionaries as potentially having more than one source. One line of explanation connects it with Robert, as a variant in the same family as Robb, Robe, Rope, and related forms. Another connects it with Norman-French names such as de Rupe or Roche, from a word meaning “rock” or “cliff.”
History
19th-century surname writers did not agree on a single origin for Roop, and some entries simply list it among similar-sounding names without deciding between them. In English-speaking records it is uncommon, and its modern bearers may reflect more than one family line with different historical origins. Because the documentary evidence in the excerpts is brief and partly indirect, the safest reading is that Roop is an established but etymologically mixed surname.
Origin
Regions
Variant spellings
Fun fact
One of the cited 19th-century sources glosses Roop alongside a cluster of names derived from Robert, while another links it to a Norman “rock” surname—showing how easily similar spellings could be folded into different etymologies.
From the historical record
“RUBY. Same as Roby, Robie, Robe, Robb, Rubb, Rope, Roop, from Robert. 86 LUDUS PATRONYMICUS. RUDDER. The same as the German names Roadhar, Ruder”
— Ludus Patronymicus; or, the etymology of curious surnames