If you can afford it, yes you can buy your adult child a house in Ireland.
yes
It will depend entirely upon the wording of the bequest. In this case, it would be a good idea to consult a probate attorney. They will know the laws and wording required for your state or country.
Yes
That should be possible.
yes
It is a way of giving the child the rights of an adult. It is often called the Removal of the disability of age. It allows a child to act as an adult and manage their own affairs. It does not allow them to buy/use alcohol or tobacco.
A child is, by definition, not a adult An adult is not, by definition, a child Thus there is no such thing as an 'adult child' - your question is therefore impossible to answer.
No and you would never want to buy something like that online.
To buy annuity, contact your existing pension provider and get a quote from them and other providers. Choose the best quote and fill out the annuity application form for the provider you choose.
Is there a grant for a single mother with a disabled adult to buy a car for transportation for his needs or to pay bills.
All reputable annuity suppliers will provide a hybrid annuity. Please talk to your financial adviser to select the best one for you. Some people may not realise that a hybrid annuity is nothing more than a name for a fixed index annuity with a guaranteed lifetime income rider. An investor buys units of a variable annuity and the balance of his portfolio is used to buy units of a fixed annuity.