Where does “escheat” come from?

escheat (Anglo-Norman) comes from Old French escheoir, from Latin excadēre, from Latin cadēre, from Latin cadō, from Proto-Italic kadō, from Proto-Indo-European ḱad- — to fall.

Ancestry of “escheat”, step by step

Step	Language	Word	Meaning
1	Old French	escheoir	to fall; to happen
2	Latin	excadēre	fall out
3	Latin	cadēre	—
4	Latin	cadō	to fall, to fall out
5	Proto-Italic	kadō	fall, sink
6	Proto-Indo-European	ḱad-	to fall

Every word from Proto-Indo-European ḱad- →Every word from Proto-Italic kadō →Every word from Latin cadō →