Peano's "Esistenzialismo"

I'm glad 'esistenza' starts with an "E" in Italian. Otherwise, Russell would have gotten it all wrong!

From an online source:

"Existence (existential quantifier)."

"Peano used [a rotated E] in volume II,

number 1, of his

Formulaire de mathematiqués, which

was published in 1897 (Cajori vol. 2, page 300).

Kevin C. Klement writes:

"While Peano had the backwards E
for a predicate of classes, Russell
was the first to use the backwards E
as a variable binding operator, and there
are the wonderful manuscripts printed in
CPBR vol 4 in which Russell makes large
dots out of Peano's backwards epsilons to
change over from the Peano-notation for
existence to a more Fregean one."

Although on second reading, if Peano had 'epsilon', he must have been thinking of Greek, 'esti', rather?

('to be').