slightly later and possibly tangential, but may be of interest - there's a few slightly later Jobson extracted civil records, which might be related:
Groom: William Oneill
Bride: Anne Jobson age 19 (c 1
837)
Marriage date: 10 Sep 1856
Location: Old Castle, Meath, Ireland
Groom's father: Thomas Oneill
Bride's father: James Jobson
(both single)
Groom: James Jobson
Bride: Maria Oneill
Marriage date: 12 May 1846
Location: Oldcastle,Meath,Ireland
Ref.: 0393
Groom: John Jobson
Bride: Eliza Webb
Marriage date: 23 Jun 1846
Location: Killeagh,Meath,Ireland
Ref. : 0377
(since these marriages were registered before 1864, they were non-Catholic)
There are also a number of Jobson births after 1864, although these seem to be concentrated around Kilcock, Co. Kildare - see :
Jobson birthsplus a number of births where the mother's maiden name was Jobson - including several in the Oldcastle area -
linkShane