In going through the Cretney surname at Brian Lawson's site, (Burial index) it appears that this family of Finlo Cretney as given by Donna in her posting is the only Cretney family to have ever lived in Rushen, and in Soroby to boot, so there must have been a very close relationship between Finlo and Issable Shirlogue/Sherlock Qualtrough or Issable's extended - parents and/or siblings, if she had any.

Most other Cretneys seem to have stayed in and around Marown, from where Finlo came.

Just an observation.

Elizabeth