Person · 1400 CE – 1444 CEAleksander MazowieckiAlso known asAleksander dari MasoviaAleksander ks. Piast-MazowieckiAleksander mazowieckiAleksander mazowieckiAleksander mazowieckiAleksander mazowieckiarchival plate · Aleksander Mazowiecki · placeholderThis entry is a stub. The Library is awakening — a longer account is being written.Connected tomother · child ofAlexandra of Lithuania+ 12 further connections to entries not yet ingested