MP spends £39K of *your* money in one day

Written Questions to the Executive are no doubt important, but they also cost money, thus I have but one question in relation to this Early Day Motion tabled by DUP MP, Gregory Campbell and currently supported by his DUP colleagues,

That this House notes the continuing cost to the public purse of hon. Members tabling substantial numbers of written questions; understands the principle behind limiting the number of named day questions which can be submitted on one day; and questions the wisdom of an hon. Member recently tabling wellover[sic] 200 questions on one day, at an estimated cost of £149 per answer and incurring a cost to the public purse in excess of £39,000.

Who is the "hon. Member" in question and can we get him/her to pay some of it back?