How did bishops marry in meadival times?

In medieval times, bishops were typically expected to remain celibate and did not marry, as celibacy was a requirement for the clergy in the Roman Catholic Church. However, there were instances where some bishops, particularly in the early medieval period, were married before their consecration or had concubines, which was often tolerated. The practice varied by region and over time, but by the high Middle Ages, the expectation of celibacy became more strictly enforced, leading to a clearer distinction between the clergy and laypeople. Consequently, marrying bishops became increasingly rare and often frowned upon by church authorities.