In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Passage: The 19th-century antiquarian Angharad Llwyd, who wrote a history of Anglesey in 1833, recorded the story noted by Gerald of Wales in the late 12th century that the church once possessed a stone "resembling a human thigh" which would return "of its own accord" however far away it was carried. It was sometimes known as the "homing stone". Gerald said that Hugh d'Avranches, 1st Earl of Chester (who died in 1101) had tested this story by throwing the stone into the sea, chained to a large rock, only to discover that the stone had returned by the next morning. As a result, the Norman earl issued an order that no-one was to attempt to move it.  It was popularly believed that if a couple had sexual intercourse near the stone (something that Gerald said happened "frequently"), it would "sweat large drops of water" and the woman would not become pregnant. Henry Rowlands wrote that the stone had been stolen from the wall of the churchyard (into which it had been set) during his time at St Nidan's.When Rowlands was vicar of St Nidan's, a small chest was found buried about 2 feet (60 cm) under the altar, containing some bone pieces.  His view was that it contained the relics of a saint from St Nidan's or another church in the region (St Beuno's Church, Clynnog Fawr or St Dwynwen's Church, Llanddwyn), and that the chest had placed in St Nidan's during the time of Edward VI for safe keeping. The sandstone reliquary is now kept at the new church, where local tradition maintains that it holds the remains of St Nidan. Jones said that it was "unique, as far as Wales is concerned." The 13th-century font, which Jones described as "a singularly beautiful specimen", was moved to the new church in about 1860.
What is the full name of the person who died in 1101?