Where does “inclosen” come from?

inclosen (Middle English) comes from Middle English enclos, from Old French enclose, from Vulgar Latin inclaudo, from Latin inclūdō, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en — in.

Ancestry of “inclosen”, step by step

Step	Language	Word	Meaning
1	Middle English	enclos	—
2	Old French	enclose	—
3	Vulgar Latin	inclaudo	—
4	Latin	inclūdō	to shut up or in, confine, enclose, imprison, keep in
5	Latin	īn-	un-, non-, not
6	Latin	în	in, at, on, upon, from (space)
7	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
8	Proto-Italic	en	in
9	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Proto-Italic en →