Rabastan, maybe? Actually no, I fear he may not do well in close proximity to Bella for an extended period of time. Benjamin Nott would be suitable, he's all but betrothed to one of the Burke girls Cissy has as bride's maids.
Might I also suggest Barty Crouch? Yes, he is more my friend than yours, but his family are well connected in the Ministry. And I can't imagine you want to look at options outside of the Sacred Twenty-Eight.