The name was never common in the early Middle Ages.

Belgium

Dutch

● 1597x1598 Barbara BoonenGes p. 327

◑ 1597x1598 Barbe BoonenGes p. 355, Barbele ibid. p. 335, Barbelen ibid. p. 348, Berbel ibid. p. 385

England

Latin

● 1559 Barbara (nom) StMartF p. 60; 1572 Barbara (nom) Reg-KirkElla p. 8; 1579 Barbara (nom) ibid. p. 9; 1579/80 Barbara (nom) ibid. p. 9; 1584 Barbara (nom) RegBeb p. 25; 1589/90 Barbara (nom) ibid. p. 30; 1590 Barbera (nom) ibid. p. 140; 1597/8 Barbera (nom) ibid. p. 37; 1598 Barbara (nom) ibid. p. 145

Dutch

● 1579 Barbara AuFr Marquinas; 1582 Barbara ibid. Grande; 1585 Barbara ibid. Wachter; 1591 Barbara ibid. Martens; 1594 Barbara ibid. Beck

◑ 1571 Barbel AuFr p. 89; 1573 Barbelken ibid. p. 89; 1594 Barbelken ibid. p. 91; 1597 Barbel ibid. p. 89

Early Modern English

● 1530 Barbara LIWill-III p. 21; 1542 Barbary RegIng p. 2; 1556 Barbary ibid. p. 4, StAnthonlin p. 11; 1559 Barbara bruton1 p. 30; 1561 Barbara ibid. p. 111; 1563 Barbery StAnthonlin p. 15; 1566 Barbara bruton1 p. 4; 1567 Barbara HAmar-vol9 p. 116; 1568 Barbara bruton1 p. 5; 1570 Barbara ibid. p. 39; 1571 Barbara ibid. p. 113; 1572 Barbery StAnthonlin p. 22; 1573 Barbery ibid. p. 23; 1574 Barbara bruton1 p. 41; 1578 Barbara HAmar-vol9 p. 92; 1581 Barbara ibid. p. 3, Barbery StAnthonlin p. 28; 1582 Barbara DEmar-vol2 p. 8, Barbaray RegPat p. 34; 1583 Barbara ibid. p. 35, SurMus p. 181, bruton1 p. 45; 1584 Barbarey Bar-in-El p. 25; 1585 Barbary ibid. p. 14; 1588 Barbara HAmar-vol9 p. 92; 1590 Barbara DEmar-vol2 p. 20, bruton1 p. 50, Barbarai RegPat p. 38, Barbary OrpingtonKe p. 8; 1591 Barbara DEmar-vol2 p. 23, RegBath p. 9, RegPat p. 38; 1591/2 Barbara ibid. p. 39; 1591 Barbarai ibid. p. 38; 1592/3 Barbara ibid. p. 39; 1592 Barbara ibid. p. 39, Barbaray ibid. p. 4; 1593 Barbara HAmar-vol9 p. 116, Barbary RegPat p. 39; 1594 Barbara DEmar-vol2 p. 29, RegPat p. 40, bruton1 p. 53; 1595 Barbara HAmar-vol9 p. 3, bruton1 p. 54; 1596 Barbara DEmar-vol2 p. 34; 1597/8 Barbara RegPat p. 41; 1597 Barbara bruton1 p. 11, Barbarai RegPat p. 41; 1598 Barbara HAmar-vol9 p. 93, RegPat p. 114, Barbarai ibid. p. 114; 1599 Barbara DEmar-vol2 p. 40, RegPat p. 42, Barbary OrpingtonKe p. 9

Middle French

◑ 1568 barbe WCS p. 4, barbee ibid. p. 4; 1569 Barbe ibid. p. 40; 1570/1 Barbe ibid. p. 6; 1571 barbe ibid. p. 40; 1572 barbe ibid. p. 7; 1575 Barbe ibid. p. 11; 1577 barbe ibid. p. 13; 1586 Barbe ibid. p. 20

Walloon

◑ 1581/2 Barbe RWC p. 562; 1582 Barbe ibid. p. 563; 1583/4 Barbe ibid. p. 437; 1583 Barbe ibid. p. 7; 1584 Barbe ibid.; 1590/1 Barbe ibid. p. 16; 1591/2 Barbe ibid. p. 563; 1591 Barbe ibid. p. 563; 1592 Barbe ibid. p. 22; 1593 Barbe ibid. p. 564

Estonia

Middle Low German

● 1524x1532 Barbala (nom) Saareste1923b p. 139

◑ 1524x1532 Barbar (nom) Saareste1923b p. 138

France

Middle French

◑ 1562 Barbe RegPCC-1 p. 8; 1563 Barbe ibid. p. 41; 1564 Barbe ibid. p. 67; 1565 Barbe ibid. p. 114; 1566 Barbe ibid. p. 223; 1567 Barbe ibid. p. 310; 1568 Barbe ibid. p. 380; 1570 Barbe ibid. p. 426, Berbe ibid. p. 434; 1571 Barbe ibid. p. 438; 1572 Barbe ibid. p. 490

Germany

Early New High German

● 1403 Barbara (gen) mairhofer DCLXXIV; 1497 Barbara Nurn1497 70

◑ 1497 Barb Nurn1497 1793

Hungary

Latin

● 1308 Barbara (nom) Slíz p. 43, s.n. Barbara; 1312 Barbara (nom) ibid. p. 43, s.n. Barbara

Italy

Latin

● 1368 Barbara (acc) Livi 230/231

Latvia

Middle Low German

● 1460x1465 Barbara Mettig1892 p. 5; 1461 Barbara ibid. p. 11; 1462 Barbare ibid. p. 11; 1510 Barbara ibid. p. 5; 1515 Barbara ibid. p. 7; 1516 Barbara ibid. p. 6; 1545 Barbara Arbusow p. 99; 1549 Barbara ibid. p. 100; 1558 Barballa Arbuzov1920 p. 46

◑ 1510 Barbar Mettig1892 p. 11; 1511 Barbar ibid. p. 5; 1515 Barbar ibid. p. 7; 1523 Barbar Arbusow p. 99

Scotland

Scots

● 1538 Barbara PGB; 1565 Barbara ibid.

Spain

Catalan

● 1510 Barbera valencia1510 4049

Spanish

● 1576 Barbola Catalogo-5.2 3936

Wales

Latin

● 1582 Barbara (nom) RegCon1 p. 37