Berenguela is the Spanish form of Berengaria — Old German berin (bear) and ger (spear), "bear-spear." Queen Berenguela of Castile (1180-1246) was the powerful queen who briefly ruled Castile in 1217 — mother of Saint Ferdinand III of Castile.
Berenguela of Navarre (1165-1230) was the Queen of England as wife of Richard the Lionheart.
Berenguela reduces to four — the number of Castilian queen.