Since I was passing Tate Britain, I called in to have a look at the portrait bust of Charles I, by Hubert Le Sueur, the French Huguenot sculptor, who is said to have been trained by Giambologna, was described in 1610 as sculpteur du Roy and moved to London some time before 1625 when he designed the catafalque for the funeral of James I. He was in Rome in 1631, making casts of classical antiquities for the Privy Garden. He returned to Paris on the outbreak of the Civil War:-
This is indeed Le Sueur’s best known work, but there are other bronzes of his in Oxford ( St John’s, and the Bodliean ) and one marble bust in the V & A.