His sister Christina
His brother Raphael
To his spiritual children the Saint wrote:
"To some people your love will be expressed with joy and to others it will be expressed with your pain. You will consider everyone your brother or your sister, for we are all children of Eve (of the large family of Adam, of God). Then, in your prayer you will say: ‘My God, help those first who are in greater need, whether they are alive or reposed brothers in the Lord.’ At that point, you will share your heart with the whole world and you will have nothing but immense love, which is Christ."
Epistles, p. 50.
http://agapienxristou.blogspot.ca/2013/05/the-siblings-of-elder-paisios.html