What Christians connected the occurrence of the Great Schism* and the Crab Nebula Supernova, which both occurred around the middle of 1054 A.D.?
This question is not about Christians speculating in astrology—a form of divination, which is unlawful foreknowledge of future events.**
This question is related to how Christians have applied Genesis 1:14,
…let them [i.e., the stars] be for signs…
to the 1054 supernova—namely, how they saw the supernova as a sign, not of a future event, but of, for example, God's displeasure at the Great Schism.
* Also called the "Eastern Schism" or "East-West Schism"
** St. Thomas Aquinas defines astrology as when "one desires to foreknow the future that cannot be forecast by their [i.e., the stars'] means." (Summa Theologica II-II q. 95 a. 5, "Whether divination by the stars is unlawful?"). Basically, "to know with certitude future human actions" by means of the stars is unlawful because humans have freewill, which the influence of the stars cannot take away; "to foreknow those future things that are caused by heavenly bodies" is "neither an unlawful nor a superstitious divination." (ibid., corpus).