Galeazzo Maria Sforza († 1476, assassinated), Duke of Milan

a certain Lucrezia, who was an illegitimate daughter of Carlo de' Medici and who became married to a devoted follower of the Milanese dynasty, Giampietro Landriani

1. Girolamo Riario (1443-1488, assassinated), Lord of Imola and Forli, nephew of Pope Sixtus IV. († 1484); marriage on 17. January 1473
2. Giacomo Feo (1470-1495, assassinated); marriage in summer or autumn 1488 (a so-called clandestine marriage)
3. Giovanni de' Medici (1467-1498); another clandestine marriage at latest in September 1497
4. Ottaviano Manfredi (1472-1499, murdered); another clandestine marriage in 1499

from her first marriage to Girolamo Riario:

1. her daughter Bianca, born in March 1478, deceased after 1522; her first husband was Astorre III. Manfredi († 1502), Lord of Faenza, they married in 1494; her second husband was the nobleman Troylo I. Rossi († 1521), first Margrave of San Secondo, they marrried in 1503; Bianca had nine children with her second husband
2. her son Ottaviano, born on 31. August 1479, deceased on 6. October 1523; Bishop of Volterra and Viterbo
3. her son Cesare, born on 24. August 1480, deceased in 1518; Archbishop of Pisa
4. her son Giovanni Livio, born on 30. October 1484, deceased in 1496
5. her son Galeazzo, born on 4. December 1485, deceased in 1557, married to Maria Giovanna della Rovere (1482-1538), daughter of Giovanni della Rovere and Giovanna da Montefeltro; two children: 1. Giulia and 2. Giulio († 1565)
6. her son Francesco Sforzino, born on 17. August 1487, deceased after 1509, Bishop of Lucca

from her second marriage to Giacomo Feo:

• her son Carlo, born in April 1489, deceased after 1509

from her third marriage to Giovanni de' Medici:

• her son Giovanni dalle Bande Nere de' Medici (originally Lodovico de' Medici), the Great Condottiere of the 16^th century, born on 6. April 1498, deceased on 30. November 1526; his wife was Maria Salviati (1499-1543), daughter of Jacopo Salviati and Lucrezia de' Medici; the son of Giovanni dalle Bande Nere de' Medici and Maria Salviati, Caterina's grandchild, Cosimo (1519-1574), became the first Grand Duke of Tuscany

• Maike Vogt-Luerssen: Die Sforza II: Caterina Sforza – Tochter einer Krieger-Dynastie (in German). Norderstedt 2008
• Maike Vogt-Luerssen: Die Sforza I: Bianca Maria Visconti – Die Stammmutter der Sforza (in German). Norderstedt 2008
• Maike Vogt-Lüerssen: Identificare Caterina Sforza nei dipinti del Rinascimento attraverso il simbolismo (in English), pag. 77 - 85, in: Caterina Sforza – 500° Anniversario Della Morte (28 Maggio 1509), Atti del Convegno di studi e della Tavola rotonda internationale, Forlì, 16 maggio 2009 a cura di Silvia Arfelli, Gilberto Giorgetti