Which preposition to use with tou

for Occurrences 1%

Bishops have mostly thin legs, so it is to be presumed that they admire them: we destine Tou Tou for a bishop's lady!" Hereupon follows a lively fire of argument between Bobby and his sister; she protesting that she will not espouse a bishop, and he asseverating that she shall.

from Occurrences 1%

" "Here he is!" cries Tou Tou from the window, whither she has retired, and now stands, like a heron, on one leg, leaning her elbow on the sill.

in Occurrences 1%

"But what is it?" "What is it?" cry Barbara and Tou Tou in a breath.

Which preposition to use with  tou