Where does “soleyn” come from?

soleyn (Old French) comes from Old French sole, from Vulgar Latin sola, from Latin solea, from Latin sōlum, from Proto-Indo-European swol- — sole; sole of the foot.

soleyn (Old French): solitary; alone; sole; only

Definitions

solitary; alone; sole; only

Ancestry of “soleyn”, step by step

Step	Language	Word	Meaning
1	Old French	sole	oblique/nominative feminine singular of sol
2	Vulgar Latin	sola	nominative plural of solum; accusative plural of...
3	Latin	solea	sandal; sole of a shoe
4	Latin	sōlum	bottom, ground, base, foundation, bed
5	Proto-Indo-European	swol-	sole; sole of the foot

Every word from Proto-Indo-European swol- →Every word from Latin sōlum →Every word from Latin solea →