Though Alexandra's exact date of birth is not known, it is thought that she was born in the late 1360s or early 1370s.
ðˌoʊ ˌælɪɡzˈændɹəz ɛɡzˈækt dˈeɪt ʌv bˈɜːθ ɪz nˌɑːt nˈoʊn, ɪɾ ɪz θˈɔːt ðæt ʃiː wʌz bˈɔːɹn ɪnðə lˈeɪt wˈʌn θˈaʊzənd θɹˈiːhˈʌndɹɪd sˈɪksti z ɔːɹ ˈɜːli wˈʌn θˈaʊzənd θɹˈiːhˈʌndɹɪd sˈɛvənti z.