"Princess Frederica Dorothea Louise Philippine of Prussia (24 May 1770 - 7 December 1836) was a member of the House of Hohenzollern. She was a niece of Frederick the Great, being the second daughter and third child of Prince Augustus Ferdinand of Prussia by his wife Margravine Elisabeth Louise of Brandenburg-Schwedt.
Louise and her husband Prince Antoni Radziwiłł were popular for their patronage of music, as well as their prominent positions in Berlin society. Louise is also notable for being the mother of Elisabeth Radziwill, the childhood love of future German Emperor Wilhelm I, whose strong desire to marry her was thwarted out of considerations for Elisabeth´s inequality of rank." - (en.wikipedia.org 03.10.2020)
)