.. the case is interesting, as Bianca Maria returns back from Ferrara in April 1441 and with Francesca, Donnina's sister in the house of Borromeo we've actually a "playing card context", and also some secure probability, that Bianca Maria saw Donnina, before she went to Bologna. These bride's in near future, they should have visited each other and surely they talked about cards, if Bianca Maria was confronted with a deck production at 1.1.1441.
The father Lancilotti is called responsible from 1413 - 1447 for a region near to Novara, but also "count of Cocignola" ... which should be near Lecce, near a location Merate (there's another Cicognolo near Cremona, but this seems to be wrong, though it would be interesting, if a connection to Cremona would exist).
It's an illegal son of Bernarbo, perhaps Lancillotto became of more interest, when his daughter Francesca married the successful Borromeo. But ...
Vitaliano Borromeo, Counsellor of the Duke of Milano, Treasurer of Milano and Ducal Treasurer 7.1.1448, Lord of Arona 14.11.1436, Lord of Camajrago and San Vito 20.9.1440, Ducal Counsellor 1441, Lord of Lesa 1441, 1st Count of Arona 26.5.1445, Senator of Milano 1447, and Ambassador, in 1431 take the surname Borromeo and give up the fiefs near Padova, +4.10.1449; m.Ambrogina Fagnani, dau.of Giacomo Fagnani (+1441)
* A1. Giacomo, Bishop of Pavia 1446, Abbot of San Barnaba 1432, *1414, +Pavia 14.8.1453
* A2. Margherita; m.Agostino Visconti from Lords of Sesto
* A3. Filippo, 2nd Count of Arona (1449-64), Cavaliere Aurato 22.3.1450, Lord of Vigezzo 5.5.1450, Lord of Camajrago and San Vito, Consignore of Laveno, Monvalle, Cerro, Ceresole, Celina, Arolo and Ispra, Counsellor of the Duke of Milano, +1464; m.Francesca Visconti, daughter and heiress of Lancillotto Count con Cicognola
# B1. Vitaliano, 3rd Count of Arona, Signore di Vigezzo, Laveno, Lesa, Canobbio, Cerro, Ceresole, Celina, Arolo, Ispra, Camairago e Consignore di Omegna (1464-93), First Counsellor and Secretary of the Duke of Milano, *1451, +7.9.1493; m.1487 Bianca di Saluzzo
# B2. Bianca; m.Pietro Martire Busca from Lords of Como
# B3. Giovanni, 4th Count of Arona and Count of Angera, Signore di Vigezzo, Laveno, Lesa, Canobbio, Camairago, Cerro, Ceresole, Celina, Arolo, Ispra, Consignore di Omegna (1493-95), Counsellor and Senator of Milano, +1495; m.Maria Cleofe Pio, dau.of Giberto Count and Lord of Carpi and Elisabetta Migliorati (testament 1492)
This seems to say, that the marriage, which connected the houses of Lancilotti and of Borromeo happened probably ca. 1450, so couldn't influence the situation of 1441.
So the consideration runs here into nothing, it seems, that Lancilotti's daughter Francesca became of interest for Borromeo, as Doninna became mighty in Bologna.
But the note says, that the older Borromeo (the successful) became Lord of Arona in 1436 and this Arona seems to be near Novara, in the region, where also the Visconti brothers Ermes and Lancilloti have their domain. So possibly Borromeo already managed the somehow lucrative marriage to Bentivoglio.
Arona and Invorio (that's at least one of the stations of Hermes and Lancillotto) have a distance of about 7 km - well, that's close. So for 1441 Lancillotti and Borromeo should have had some closer contact at least.