Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar.
Agesander of Rhodes
Controversy over the general date of Agesander's life, or the lives of various Agesanders, has never been settled; it was previously discussed on the grounds of artistic style, but now the evidence of inscriptions has come into play. The 18th-century art historian Johann Joachim Winckelmann felt certain that, as sculptor of the "Laocoön" group, he was a contemporary of Lysippos in the 4th century BC; others have placed him as late as the 70s AD, in the reign of Vespasian. The death of Pliny in the eruption that destroyed Pompeii in 79 AD provides a "terminus ante quem" for the "Laocoön", just as the collapsing grotto at Sperlonga in 26 AD does for those works. Modern scholarly consensus puts the likely time frame for these works as between 50 BC and 70 AD, though lively controversy continues as to more precise dating: a French article of 1997 was called "Un conflit qui s'éternalise: La guerre de Sperlonga", or "A conflict which is becoming endless: the War of Sperlonga".