Hi, Are you aware of any examples of actual Targaryens (not just suspected or just someone with some blood but not the name) being rejected and killed by an unbonded dragon when trying to bond with it and ride it? Thanks.
A Targaryen killed by an unbonded dragon? No. (By a bonded dragon, yes.) However, Archmaester Gyldayn says:
The largest and oldest of the wild dragons was the Cannibal […] Would-be dragontamers had made attempts to ride him a dozen times; his lair was littered with their bones. None of the dragonseeds were fool enough to disturb the Cannibal (any who were did not return to tell their tales).
–The Princess and the Queen
Even for a son of House Targaryen, there are always dangers in approaching a strange dragon, particularly an old, bad-tempered dragon who has recently lost her rider. His father and mother would never allow him to go near Vhagar, Aemond knew.
So, because of the many failed attempts on the Cannibal, and because “there are always dangers” even for a Targaryen, there may have been deadly incidents we are yet unaware of. (Perhaps one of the children of Jaehaerys and Alysanne that did not live to adulthood?) If ever something happened, I would expect to see it in Fire and Blood, so we’ll find out this November.