Alice Martin Bishop Clark

Plymouth colony, killed her 4 year old daughter Martha Clark
with a knife.

Richard Bishop married Alice (Martin) Clark on December 5, 1644
[possibly as his second wife]. She was the widow of George Clark, and
tragically ended her life by murdering her own child, and was
subsequently hung therefor, in 1648. There is a mournful account of
the murder by Alice Bishop of her daughter, Martha Clarke, 4 years
old, July 22, 1648 (Savage, Vol. I, page 393).

http://freepages.genealogy.rootsweb.com/~bajclark/Martin.html

The reference to the murder of Martha Clarke by her mother Alice
Bishop, was perhaps the most intriguing reference found in the first
four volumes of the Plymouth Colony Court Records (PCR 2:131-133). The
records describe the murder in detail "wee found a woman child, of
about foure yeares of age, lying in her shifte vppon her left cheeke,
with her throat cut with diuerse gashes crose wayes, the wind pipe cut
and stuke into the throate downward." The description of the murder
demonstrates that Alice did not fully comprehend the consequences of
her actions. When Alice Bishop was accused of murdering her daughter
she made no recorded protest against the accusation. The reference
further describes her trial and sentence of hanging "by the necke
vntell her body is dead, which accordingly was executed" (PCR 2:134).

http://blacksheep.rootsweb.com/murder.htm