Question: What massacre was Peter Gusenberg's brother a victim of?

Frank Gusenberg (October 11, 1893 – February 14, 1929) was a German-American contract killer and a victim of the Saint Valentine's Day massacre in Chicago, Illinois. <SEP> The Westervelt massacre, also known as the Westerfield massacre, was an indigenous attack on a caravan of Dutch frontier settlers that occurred during the American Revolutionary War around 3:00 am on June 27, 1780 in Kentucky County, Virginia, the present day state of Kentucky.  It remains one of the largest massacres in Kentucky state history.  The settlers were traveling southeast from Low Dutch Station to Harrod's Town.  The settler relocation was in part a reaction to British Captain Henry Bird's invasion of Kentucky.  The area immediately east of Low Dutch Station had been overrun with British allied Indians.  Harrod's Town was fortified and a move south would lead the settlers away from Captain Bird's invading army from the north.  The caravan was ambushed in a surprise attack, during the night, after a day's travel of twelve miles.  The exact location of the massacre is not definitively known.  However, it is likely to have occurred at Floyd's Fork and Broad Run.  The caravan was formed by Jacobus Westervelt and consisted of forty-one settlers from ten different families.  Ten of the seventeen settlers killed were members of the Westervelt family.  The victims included men, women, and children.  The Indians responsible for the massacre were allied to the British and received ₤5 for each victim's scalp cut off and returned to the British authorities.  The Indians were thus awarded ₤85 by the British for massacring the Dutch settlers.  The Westervelt Massacre had a chilling effect on the region.  A number of settlers from Low Dutch Station joined Colonel George Rogers Clark's militia after the massacre. <SEP> Joseph Horn Cloud born 1873 and died September 18, 1920.  His father was Horn Cloud and mother Nest, both parents died at the Wounded Knee Massacre along with two brothers William Horn Cloud (1876-1890), Sherman Horn Cloud (1865-1890) and a niece.  Joseph was a survivor of the massacre as well as his brother Daniel and half brother Dewey Beard [p. 89-95].  Dewey's mother was Yellow Leaf who also died during the massacre.  In the early 1900s a writer named Eli S. Ricker began research for a book he was going to call "The Final Conflict between the Red Men and the Palefaces."  He gathered sources and interviews about conditions and battles on the Plains during the last half of the 1800s.  He recorded the interviews in small note pads known to historians as the "Ricker Tablets."  One such interview was with Joseph telling Ricker what he witnessed at the Wounded Knee Massacre, "When the shooting began the women ran to the ravine.  The shooting was in every direction.  Soldiers shot into one another... Many of the Indians in the circle were killed.  Many of them mingled with the soldiers behind them, picking up guns from dead soldiers and taking cartridge belts." <SEP>  Peter Gusenberg participated in an infamous attack on Al Capone during a vicious gang war. Peter Gusenberg a.k.a. ""Goosey"" (September 22, 1888 – February 14, 1929) and his brother Frank were German-American contract killers and members of Chicago's North Side Gang, the main rival to the Chicago Outfit.