Where does “alguin” come from?

alguin (Fala) comes from Old Portuguese alguen, from Latin aliquem, from Latin aliquis, from Latin aliquo, from Latin quō, from Latin quī, from Latin -cumque, from Latin cumque — resin, gum; to say, speak.

Ancestry of “alguin”, step by step

StepLanguageWordMeaning
1Old Portuguesealguen
2Latinaliquemmasculine accusative singular of aliquis
3Latinaliquissomeone, something, anyone, anything; some, any
4Latinaliquosomewhither, to somewhere
5Latinquōwhither, whereto, where
6Latinquīwho, that, which, what
7Latin-cumqueUsed to derive indefinite adjectives, adverbs and...
8Latincumquehowever, whenever, howsoever, whensoever
9Latincumwith, along with; at; -fold
10Old LatincomAlternative form of cum
11Proto-Italickomwith, along, at
12Proto-Indo-Europeanḱómbeside, near, by, with
13Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
14Middle Englishkyt
15Germankittputty certain kinds of cement used for fixing e.g. window panes
16Old High Germankuti
17Proto-West Germanickwidugum, resin
18Proto-Germanickweduzresin
19Proto-Indo-Europeangʷet-resin, gum; to say, speak
Every word from Proto-Indo-European gʷet-Every word from Proto-Germanic kweduzEvery word from Proto-West Germanic kwidu