Sorry - I may have misread my own data! The Maj Robert Blakeney I was referring to appears to actually have been married to Gertrude Blakeney. Susannah Ormsby may not be related to that Blakeney family at all.
For clarification, the Blakeney family I have, of Athenry and Abbert, seems to be as follows:
1. John Blakeney m. Sarah Persse 1.1 Maj Robert Blakeney m. Gertrude Blakeney 1.1.1 John Blakeney m. Grace Persse 126.96.36.199 Sarah Blakeney m. William Persse 188.8.131.52.1 Elizabeth Persse 184.108.40.206.2 Robert Persse 220.127.116.11.3 Henry Stratford Persse 18.104.22.168.4 William Blakeney Persse 22.214.171.124.5 Parsons Persse 126.96.36.199 Col William Blakeney 188.8.131.52.1 Field Marshall Sir Edward Blakeney 184.108.40.206 Theophilus Blakeney m. Margaret Stafford 220.127.116.11.1 Margaret Blakeney 18.104.22.168.2 Elizabeth Blakeney 22.214.171.124.3 Ellinor Harriet Blakeney 126.96.36.199.4 John Henry Blakeney 188.8.131.52.5 Bridget Blakeney
Hope that is helpful. Sorry for the misinformation. I'd be interested to find out how Capt John's family fits with these Blakeneys, if there is a connection.