He is married to Ludmilla ze Pšova.
They got married
Child(ren):
BOŘIWOJ, son of --- ([852/53]-[900]). The Chronica Boemorum names Gostivit as the father of Borwoy, and records that the latter was the first duke to be baptised by Methodius Bishop of Moravia, during the reign of Svatopluk King of Moravia[9]. He founded the town of Prague[10]. Dux. The Cronica Principum Regni Boemiæ records that "Borzywoy primus Dux christianus in Boemia" was baptised "cum coniuge sua beata Ludmilla Martyre" in 894[11].
m ([874/75]) LUDMILLA, daughter of SLAVIBOR ze Pšova [Prince of Pšov or Prince of the Sorbs] (860-murdered Burg Tetin 15 Sep 921, bur Prague St Georg). The Chronica Boemorum names "filia Zlavoboris comitis de castello Psov, nomine Ludmila" as wife of "Borivoy"[12]. She was strangled[13]. The Cronica Principum Regni Boemiæ records that "Borzywoy primus Dux christianus in Boemia" was baptised "cum coniuge sua beata Ludmilla Martyre" in 894[14]. She was canonised.
Duke Bořiwoj & his wife had two children:
SPYTIHNĔV (875-915).
VRATISLAV (888-killed in battle 13 Feb 921).
Bronnen:
[10] ES I.2 176.
[11] Pelzel, F. M. and Dobrowsky, J. (eds.) (1784) Scriptores Rerum Bohemicarum, Tomus II (Prague), Cronica Principum Regni Boemiæ, p. 427.
[12] Cosmæ Pragensis Chronica Boemorum I.15, MGH SS IX, p. 45.
[13] ES I.2 176.
[14] Cronica Principum Regni Boemiæ, Scriptores Rerum Bohemicarum, Tomus II, p. 427.
https://fmg.ac/Projects/MedLands/BOHEMIA.htm#_ftnref10