Please answer the following question: What type of details about robert of ghent  can be gathered from the following bio?  Bio: robert of ghent or robert de gant -lrb- c. 1085 -- after 1154 -rrb- was lord chancellor of england and dean of york in the 12th century . the younger son of a nobleman , robert was probably a member of the cathedral chapter of york before his selection as chancellor by king stephen of england in the mid-1140s . he is not mentioned often in documents from his time as chancellor , but why this is so is unknown . he became dean at york minster around 1147 . robert was slightly involved in the disputes over who would be archbishop of york in the late 1140s and 1150s , but it is likely that his chancellorship prevented his deeper involvement in diocesan affairs . he was no longer chancellor after the death of stephen , but probably continued to hold the office of dean until his death around 1157 or 1158 .
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