Taylor
The fake occupation & spook name Taylor / Tailor seems to be a variant of Teller, which means banker. The word is derived from Old English tellan / Old German tellen (zählen, teilen) which means “counting” & “accounting”. It’s no coincidence that the telling of a story is also called an “account”, and that untold wealth is “uncountable wealth”.
Another possibility is that it’s a translation pun (as with Weaver), as in Aramaic both occupations are similar to Shapiro which means “nobleman”. And of course, spooks may have run actual large businesses connected to cloth, only they were the owners and not the workers.
English, German tell = telling, counting, accounting, banker
teller : a person who tells stories; (banking, chiefly US) a bank clerk who receives and pays out money; (synonym: cashier); (banking) ellipsis of automated teller machine; From Middle English tellere (“one who counts or enumerates; one who recounts or relates; teller”), equivalent to tell (verb) + -er. — English (Wikt)
tell : to count, reckon, or enumerate; to narrate; From Middle English tellen (“to count, tell”), from Old English tellan (“to count, tell”), from Proto-Germanic *taljaną, *talzijaną (“to count, enumerate”) — English (Wikt)
tellen : to count, to tell; From Middle Low German tellen, from Old Saxon tellian, from Proto-Germanic *taljaną — Low German (Wikt)