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 18.104.22.168 Sarah Blakeney m. William Persse 22.214.171.124.1 Elizabeth Persse 126.96.36.199.2 Robert Persse 188.8.131.52.3 Henry Stratford Persse 184.108.40.206.4 William Blakeney Persse 220.127.116.11.5 Parsons Persse 18.104.22.168 Col William Blakeney 22.214.171.124.1 Field Marshall Sir Edward Blakeney 126.96.36.199 Theophilus Blakeney m. Margaret Stafford 188.8.131.52.1 Margaret Blakeney 184.108.40.206.2 Elizabeth Blakeney 220.127.116.11.3 Ellinor Harriet Blakeney 18.104.22.168.4 John Henry Blakeney 22.214.171.124.5 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.