Montesinos Family History
Montesinos Name Meaning
Spanish: habitational name from Montesinos in Murcia or Los Montesinos in Badajoz or Alicante. Compare Montecinos . Jewish (Sephardic): adoption of the Spanish surname (see 1 above) at the moment of conversion to Roman Catholicism. After the return to Judaism (generations later) some descendants retained the surname their families used as Catholic.
Source: Dictionary of American Family Names 2nd edition, 2022