Fa-Hsien may have lived, and composed the narrative of his travels, after the change of name was adopted.

See the Topographical Tables of the different Dynasties ({.} {.} {.} {.} {.}), published in 1815.
(9) What these vegetables exactly were it is difficult to say; and there are different readings of the characters for them.

Williams' Dictionary, under kwoh, brings the two names together in a phrase, but the rendering of it is simply "a soup of simples." For two or three columns here, however, the text appears to me confused and imperfect.
(10) I suppose these men were really hunters; and, when brought before Fa-Hsien, because he was a Sramana, they thought they would please him by saying they were disciples of Buddha.

But what had disciples of Buddha to do with hunting and taking life?
They were caught in their own trap, and said they were looking for peaches.
(11) The Chinese character here has occurred twice before, but in a different meaning and connexion.

Remusat, Beal, and Giles take it as equivalent to "to sacrifice." But his followers do not "sacrifice" to Buddha.