Where does “espia” come from?

espia (Catalan) comes from Catalan espiar, from Vulgar Latin spiare, from Frankish spehōn, from Proto-Germanic spehōną, from Proto-Indo-European speḱ- — to see, to look, to observe.

espia (Catalan): spy

Definitions

Ancestry of “espia”, step by step

Step	Language	Word	Meaning
1	Catalan	espiar	to spy
2	Vulgar Latin	spiare	present active infinitive of *spiō
3	Frankish	spehōn	to spy, watch; to peer, to look, to spy
4	Proto-Germanic	spehōną	to peer, look, spy
5	Proto-Indo-European	speḱ-	to see, to look, to observe

Every word from Proto-Indo-European speḱ- →Every word from Proto-Germanic spehōną →Every word from Frankish spehōn →