Disclaimer of Property Interest

Can I disclaim inherited property after pledging it in Virginia?
I inherited some property from my father through intestate succession. I have to pledge the property. Is it possible under Virginia law to disclaim the property after it is released?
Can I renounce my interest in inherited property while my grandmother is alive?
Myself and my brother are to receive the interest to a house and a parcel of land respectively that is owned by our grandmother. We are planning to relocate to Michigan and want to renounce our interest in these properties. Our grandmother is still living. How can we renounce our interest to these properties?
Can my wife renounce her inherited land interest after mortgaging it?
My wife inherited an interest in a parcel of land from her father. She mortgaged this land. Now she wants to renounce her interest in this land. Can she disclaim her interest on the land?
Can I renounce my interest in a gifted property?
I was gifted a property with a small building on it by my grandfather. Till last year I have been using this property for my business purpose and the building was used as a warehouse. Now I have wound up my business and would like to renounce my interest in this property. How can I renounce my interest in the property?
Can my uncle's son disclaim his rights to joint property?
My uncle had a joint property with a building in it. His will stated that the property will be vested jointly in me and his son. It also stated that we can lease out the building and divide the rent equally between us. His son neither wants the property nor the building and rent. Can he disclaim his rights over it?