Plutarch. Plutarch's Lives of the Noble Grecians and Romans
Englished by Sir Thomas North. Trans. Sir Thomas North. Vol. 6 (1579; London: David Nutt, 1896) 236.

MARCUS    ashes of his bodie unto Servilia his mother. And for Porcia, 
BRUTUS    Brutus wife: Nicolaus the Philosopher, and Valerius Maximus 
Porcia,    doe wryte, that she determining to kill her selfe (her parents 
Brutus wife,    and frendes carefullie looking to her to kepe her from it) 
killed her    tooke hotte burning coles, and cast them into her mouth, 
selfe with    and kept her mouth so close, that she choked her selfe. 
burning    There was a letter of Brutus found wrytten to his frendes, 
coles.    complayning of their negligence, that his wife being sicke, 
    they would not helpe her, but suffred her to kill her selfe, 
    choosing to dye, rather then to languish in paine. Thus it 
    appeareth, that Nicolaus knewe not well that time, sith 
    the letter (at the least if it were Brutus letter) doth 
    plainly declare the disease and love of this Lady, 
    and also the maner of her death. 
    TO come nowe to compare these two noble personages  
    together, it is certaine that both of them having had great  
    gifts in them (and specially Dion) of small occasions they  
    made them selves great men: and therfore Dion of both  
    deserveth chiefest praise. For, he had no cohelper to  
    bring him unto that greatnesse, as Brutus had of Cassius: 
    who doubtlesse was not comparable unto Brutus, for  
    vertue and respect of honor, though otherwise in matters 
    of warre, he was no lesse wise and valliant then he. For 
    many doe impute unto Cassius, the first beginning and 
    originall of all the warre and enterprise: and sayd it was 
    he that did encourage Brutus, to conspire Caesars death. 
    Where Dion furnished him selfe with armor, shippes and 
    souldiers and wanne those frendes and companions also that 
    did helpe him, to prosecute his warre. Nor he did not as