First Transgender Actor?

Weeks after Jeffrey Tambor won an Emmy for his work in 'Transparent', a year after Bruce was celebrated as Caytlin - is 'Modern Family' really doing anything that daring?
(I catch the show on occasion - mostly to check out Sophia Vergara.)
While the show has just cast a young transgender eight year old (Can one really be transgender at that early of an age?) as the gay couple's adoptive daughter's new friend - is this really a 'first'?

In the tradition of the Onnagata in Japanese theater - Yellow Dancer from 'Robotech' was a transgender character in a children's cartoon - over thirty years ago.