Editing Cadency (section)

=== Portugal ===
The Portuguese systems of differencing have their origins in the regulations of King [[Manuel I of Portugal|Manuel I]], who ruled Portugal from 1495 to 1521. There are two systems, one for the non-Royal families and the other for the Royal House.

==== Noble families ====
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The Portuguese system of differentiation for the noble non-Royal families is unlike any other cadency system. It is true that the brisure personalises the arms, however, since the Portuguese have an arbitrary choice of surnames, they may select any family name from the father's or mother's side of their genealogical table and a coat of arms, which does not have to coincide with it. Thus, the system of differencing only serves to show from which ancestral line the arms are derived. The head of the lineage uses the arms without a difference, but should he be the head of more than one family, the arms are combined by quartering. The heir apparent to the arms of the head of a lineage never uses a mark of difference.

==== Royal house ====
{{see|Portuguese heraldry}}

{| class="wikitable" style="margin:1em auto; text-align:center;"
|-
| [[File:Shield of the Kingdom of Portugal (1481-1910).png|95px]]
| [[File:Armas rainha portugal.png|95px]]
| [[File:Coat of Arms of the Prince of Portugal (1481-1910).png|95px]]
| [[File:Armas infanta portugal.png|95px]]
| [[File:Brasao-Duque-Porto.png|95px]]
|-
| Arms of the Duke of Braganza, head of the Royal house<br>
| Arms of Isabel, Duchess of Braganza, wife of the Duke of Braganza
| Arms of Don Alfonso, Prince of Beira and Duke of Barcelos, Eldest son of<br>the Duke of Braganza
| Arms of Infanta Maria Francisca, daughter of the Duke and Duchess of Braganza
| Arms of Infante Dinis, Duke of Porto, younger son of the Duke of Braganza. The castle on the label is taken from the arms of his mother
|}