William Wallace Lincoln
William Wallace Lincoln ( December 21 , 1850 – February 20 , 1862 ) was the third son of President Abraham Lincoln and Mary Todd Lincoln . 
<triplet> William Wallace Lincoln <subj> December 21, 1850 <obj> date of birth <subj> February 20, 1862 <obj> date of death <subj> Abraham Lincoln <obj> father <subj> Mary Todd Lincoln <obj> mother <triplet> Abraham Lincoln <subj> William Wallace Lincoln <obj> child <subj> Mary Todd Lincoln <obj> spouse <triplet> Mary Todd Lincoln <subj> Abraham Lincoln <obj> spouse