We found ourselves in a similar position but not only did we both have children by previous marriages we wanted them to inherit in un equal amounts when both of us are gone. Having found our UK notaire totally incompetant in this area we were about to pull out of the sale when our immobilier put us on to a consultant in France who resolved our problem in a couple of days. It wouldn't suit everyone but basically the house ownership was split 80% for my wife and 20% for me with a usufruit to ensure the remaining partner had full use of the property until his/her death. This may only be possible if you are paying cash for the property, and you need to be sure that there may not be a possibility of a divorce in the future!! Good luck, KESI