Crew Lancaster LM508

Desperately looking for the families of some of the crew members of the Lancaster LM508 SR-P, which crashed on the night of June 22, 1944 just outside of Werkendam, The Netherlands.
I have info on Keogh, Horrigan and have just found family of Hingley and Gascoigne.
That still leaves Duff, Ball, Sheard and Rogerson.
No luck with the British authorities so far, so I depend on the families.
Your help is very much appreciated!