William Smith,
A Smaller Dictionary of Greek and Roman Antiquities
“ In its widest sense it signifies the totality of that which belongs to a Roman citizen who is sui juris, and therefore a paterfamilias. Thus, in certain cases of testamentary disposition, the word familia is explained by the equivalent patrimonium; and the person who received the familia from the testator was called familiae emptor. But the word familia is sometimes limited to signify “persons,” that is, all those who are in the power of a paterfamilias, such as his sons (filii-familias) , daughters, grandchildren, and slaves. ”
