Namesakes
Norwegian Kings and Queens:
1 king
King Karl III Johan (a.k.a. Baptist) 1818-1844 
Other Royalty:
1 prince
Johann I Joseph, Prince of Liechtenstein (a.k.a. Baptist) 1805-1836 Liechtenstein
Saints:
4 saints, 1 blessed
Blessed John Baptist Zola ?-1626
Saint John Baptist Chon Chang-un 1810-1866
Saint John Baptist Nam Chong-sam 1816-1866
Saint John Baptist Con ?-1840
Saint John Baptist Thanh ?-1840
Swedish Kings and Queens:
1 king
King Karl XIV Johan (a.k.a. Baptist) 1818-1844