No idea of the possible connection but here is Hiram's marriage.
The Portadown Weekly News
Portadown, County Armagh
August 13, 1859
MARRIAGES.
On the 4th instant, in the Presbyterian Church, Clare,
by the Rev. John Bell, uncle to the bride, assisted by the
Rev. Andrew M’Caldin, Hiram Moneypenny, Esq., Laurel
Cottage, to Agnes, daughter to John Watson, Esq.,
Cornascribe, both of County Armagh.