Misc: Who is the patron saint of Peru?

Questions

How many wooden objects are normally in full view on a cricket field during play?

Which Cuban heavyweight won his third consecutive gold medal in Moscow in 1980?

Which composer originally dedicated his third symphony to Napoleon, but changed his mind when his hero declared himself Emperor?

Which continent's highest mountain is made up of three extinct volcanoes, Mawensi, Shira, and Kibo, the youngest and highest?

Sir Archibald MacIndoe was a pioneer in which field during WW2?