Apparently, San Lorenzo was Pius IX's favourite church and his willAnd on the subject of Leo XIII, a seminarian from here in Rome tells me:
specified that he be buried there. The mosaics on the wall of the chapel
where he lies (I've seen it too) depict the two dogmas that he solemnly
defined: Our Lady's Immaculate Conception and Papal Infallibility.
Incidentally, the mob that tried to fling his corpus into the Tiber were
It is said that one of the reasons that Leo XIII asked to be buried to the left of the Apse in the Lateran is the fact that Innocent III is buried to the right of the Apse. Leo had a great admiration for Innocent who did much to increase the power and prestige of the Church.