ˌɔn ɪlˈɛvən mˈɑːɹtʃ wˈʌn θˈaʊzənd fˈoːɹhˈʌndɹɪd fˈoːɹɾi θɹˈiː, wˌɛn ʃˈɑːɹlət wʌz dʒˈʌst ˌoʊvɚɹ ɐ jˈɪɹ ˈoʊld, ʃiː wʌz bᵻtɹˈoʊðd tə fɹˈɛdɚɹˌɪk ʌv sˈæksəni twˈɛnti ˈeɪt ˈɔːɡəst wˈʌn θˈaʊzənd fˈoːɹhˈʌndɹɪd θˈɜːɾi nˈaɪn dˈæʃ twˈɛnti θɹˈiː dᵻsˈɛmbɚ wˈʌn θˈaʊzənd fˈoːɹhˈʌndɹɪd fˈɪfti wˈʌn, ˈɛldɪst sˈʌn ʌv fɹˈɛdɚɹˌɪk ɹˌoʊmən tˈuː, ᵻlˈɛktɚɹ ʌv sˈæksəni.
On 11 March 1443, when Charlotte was just over a year old, she was betrothed to Frederick of Saxony (28 August 1439- 23 December 1451), eldest son of Frederick II, Elector of Saxony.