Hi, sorry for the late response. I wish I could help you, but I have never tried to contact the Cusack family myself. Have you tried writing to his daughters directly? There are a number of places that provide celebrity addresses, although they often charge a fee. If you register with IMDb Pro (www.imdb.com), they offer a "free trial" and claim to have contact info for Sorcha, Sinéad, and Niamh, as well as Sinéad's husband Jeremy Irons. Hope you're able to get in touch. I'd love to read the full biography on Cyril Cusack!