Origins
Recorded Origins
The source states that 阿鲁 was a Jurchen surname in the Jin dynasty; that the Manchu had the surname in the Qing dynasty, also written “阿噜,” while qualifying the connection as “possibly descendants of the Jurchen 阿鲁 clan”; and that 阿鲁 is also a current Yi surname.
Reference: 阿鲁姓_阿鲁姓的来源和历史_百家姓
Historical Records
Documentary Attestations and Variant Reading
The source cites 姓氏词典 and 二十五史人名索引 for the reading ēlǔ, listing “阿鲁·补,” “阿鲁·真” in the Jin dynasty and “阿鲁·图” in the Yuan dynasty. It also says 中国古今姓氏辞典 reads it ālǔ and identifies it as a Jurchen surname of the Jin period. These are quotations through the supplied source and do not constitute direct verification of the original works.
Reference: 阿鲁姓_阿鲁姓的来源和历史_百家姓