This is the only known description of this particular Guizzetti crest.

Le memorie di questa famiglia risalgono al 1250, e da quest'epoca fino al 1741 ebbe sempre notai, procuratori, causidici. giovanni di pietro console. Bartolomeo dottor di legge e senatore in Tonino. Un ramo dei Guizzetti si trapianto in bologna. Arma: D' azzurro, al naviglio d' oro di forma antica guizzante sopra un mare d'argento; il detto naviglio caricato da un monte di tre cime di verde; da quella del mezzo excono fiamme di rosso.


The memories of this family go back to 1250, and give this age until 1741 had always notary publics, proxies, legal advisors. Giovanni of Peter consul. Bartolomeo dottor of law and senator in Tonino. A branch of Guizzetti transplant in Bologna. Arm: Of blue, to the ship of gold of wriggling ancient shape over a silver sea; the saying loaded ship gives a mount of three tops of green; from that one of means excono flames of red.

by Maurizio Guizzetti
maurizio.guizzetti.name/guizzetti

I've found this coats of arms on the web-site WWW.Guizzetti.net in America;
its origins aren't so clear, we just know it has been found in old books.
The presence of a boat could be justified by the origins in Sardinia of the
surname Guizzetti, but if you observe some photos taken from Solto Collina
which show the Iseo Lake, they show the incredible resemblance of the
mountain with three peaks on the coat, with the mountain Trenta Passi and
the lake on its foot.

 

 
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