It depends on the language.
In Portuguese, particles (de, do, da, e) do not count regarding initials. They are basically connecting elements between names, and are often omitted. For example, in a phone list or a list of references, "
Luís de Camões" would be listed under C (Camões,
Luís de). He would be adressed as "senhor Camões", never "senhor de Camões").
However, with the introduction of IT systems, particles are often counted when names are ordered automatically. For this reason, that nowadays many alphabetically-ordered lists could look like this:
1.
António da
Silva Pereira (ADSP)
2.
António Esteves
Santos (AES)
3.
António Silva Gomes (ASG)
While traditionally, it would be something like:
1.
António Esteves
Santos (AES)
2.
António Silva Gomes (ASG)
3.
António da
Silva Pereira (ASP)
I should mention that outside of phonebooks and academic citations, Portuguese people are always listed alphabetically using their full names in order (i.e. first name(s) followed by surnames). Examples: school lists, public competitions, voting registrations, etc. So you would find
Luís de Camões under the letter L.
This message was edited 9/22/2021, 2:31 PM