OK so it looks like the irishgenealogy link worked. I used a time period of marriages up to 1860 for my search for James Bryson marriages. This happens to also brung up Brysons femails whose husband is named James . So as my link to Brysons is through Gawns(see link to Will on page 2 by AnnFerguson), my eye was caught by the marriage in 1849 of Joyce Bryson of Ballybracken, aged 21, daughter of Robert.
arty 1 Name JAMES MILFORD
Party 2 Name JOYCE BRYSON
Date of Event 31 August 1849
Group Registration ID 3189748
SR District/Reg Area Antrim
Image
This is not the Joice Bryson, spinster who died 1862 who I have as the Aunt of John Gawn (from his will of 1822). I have this older Joice down as the daughter of a James Bryson of Ballyvoy who died 1 Aug 1832 and his wife Elizabeth who died 1831.
I do not have a name for the mother of John Gawn and his sister Agnes (who married Francis Ferguson)