Who was the last English/British/UK King whose first two sons (or first two legitimate sons) both had a son (or both had a legitimate son)?

Prince Charles will probably be the next. Queen Victoria was the last monarch of either gender. If we don't include sons or grandsons who are known to be illegitimate, then the last possible male example I can find is Henry III (lived 1 October 1207 – 16 November 1272, reigned 28 October 1216 – 16 November... show more Prince Charles will probably be the next.

Queen Victoria was the last monarch of either gender.

If we don't include sons or grandsons who are known to be illegitimate, then the last possible male example I can find is Henry III (lived 1 October 1207 – 16 November 1272, reigned 28 October 1216 – 16 November 1272), but it seems implausible that there would be no one in over 700 years.

If we include a King's illegitimate sons, then it might be George IV (I'm not sure which of his rumored or reported illegitimate sons were really his, so I can't tell who his first two illegitimate sons were).

If we include a King whose first two legitimate sons both had sons, but didn't both have legitimate sons, then it might be George III (I'm not sure if Prince Frederick had a son).

Or maybe Henry IV, whose first son (Henry V) had a legitimate son and whose second son (Thomas) had an illegitimate son.
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