 Various other artistic colleagues were also involved including his father Pietro Bernini, his brother Luigi Bernini, Stefano Maderno, François Duquesnoy, Andrea Bolgi and Giuliano Finelli who contributed to the sculptural decoration.There remained an issue that Bernini was not to resolve until later in his career.In a Latin cross church, the high altar should be placed in the chancel at the end of the longitudinal axis and yet in St. Peter's it was located in the centre of the crossing.