Namesakes
Other Royalty:
2 princesses, 2 princess/queen consorts
Luise Ulrike of Prussia (a.k.a. Lovisa) 1720-1782; 1751-1771 Prussia; Sweden 
Margaretha of Sweden (middle name Lovisa) 1899-1977 Sweden
Märtha of Sweden (middle name Lovisa) 1901-1954; 1929-1954 Sweden; Norway
Astrid of Sweden (middle name Lovisa) 1905-1935; 1934-1935 Sweden; Belgium