Where does “alectorian” come from?

alectorian (English) comes from English ān, from Middle English ān, from Old English ān, from Proto-West Germanic ain, from Proto-Germanic ainaz, from Proto-Indo-European óynos — one; single.

Ancestry of “alectorian”, step by step

alectorian traces back through 3 separate lines of ancestry.

via English ān

Step	Language	Word	Meaning
1	English	ān	—
2	Middle English	ān	a, an indefinite article
3	Old English	ān	lonely; entirely alone, solitary, single; one
4	Proto-West Germanic	ain	one
5	Proto-Germanic	ainaz	one; some
6	Proto-Indo-European	óynos	one; single

via Ancient Greek ἀλέκτωρ

Step	Language	Word	Meaning
1	Ancient Greek	ἀλέκτωρ	cock, rooster; husband, consort; unwedded
2	Ancient Greek	ἀ-	The alpha privativum, used to make words that...
3	Proto-Hellenic	hə-	same; together
4	Proto-Indo-European	sm̥-	one; with, together
5	Proto-Indo-European	sem-	together, one

via English mul:Alectoria

Step	Language	Word	Meaning
1	English	mul:Alectoria	—

Every word from Proto-Indo-European óynos →Every word from Proto-Germanic ainaz →Every word from Proto-West Germanic ain →