Brittonic Queen Cartimandua

Hello

the Brittonic Queen name Cartimandua seems = shiny femelle pony ?
Old Irish Cart = to clean
Old Irish Menn = Little animal = Kid = Celtic Mandu- (?)= little
horse

Karti-Mandu(a)


but better

(the queen)carried by two ponys
(the queen) driving a pony chariot

Kar(r)-ti = to carry =
Mandu- = Pony
D(o)ua = Two

Kar(r)-ti-mandu-dua = Karrtimandua = Kartimandua
is it correct ?