I heard of it long before we studied the Egyptians at school.
When I was seven we watched a television series called Dark Towers at school bloody scary! it was one of the Television for Schools series with the orange letter covered puppet called "Wordy". The main character in that series was called Ptolemy (Tolly).
The next series was The Boy From Space. He was silver.
Going into the dining room to watch half an hour of tv was the highlight of the week (probably because there was nowhere near the amount of children's tv there is now, and we weren't allowed to watch much anyway as we had to play outside all the time).
Even the blue clock that counted down the time to the start was exciting hehehe!