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Thanks to everybody for the replies. The IMDB link posted by LeMarchand was very useful as it gives cast credits and other useful information, like there were 26 X 30 min episodes for instance. If I find out anything significant, I'll post back here on the AB.
BTW the French titles were Thibaud des croisades and Thibaud ou les croisades.
I also remember Champion the wonder horse and Casey Jones (Based on a real character, search on google). Before Casey Jones on a Saturday, I used to watch Ali Bongo's Magic Circus.
Ahhhh memories.