Ian Rush

Ad hoc pertains to a specific situation, and is often improvised or impromptu. Ad hoc in terms of salary would be reimbursement for things not specifically mentioned in your salary agreement, such as special bonuses, payment to sick or injured employees, or reimbursement for personal expenses not mentioned in your contract.

That is a common misconception, but it's not true. The Chinese invented it. It was first mentioned by Yan Zhitui in 589 AD.

Lucy probably was not employed during the years mentioned as she was still just a child.

Saint Sebastian (died circa 288 AD) is not mentioned in the Bible, as the events of the Bible all predate his life.